Volume 32, Number 3 Summer 2014 Boulder County Nature Association "The Boulder County Nature Association is a private, non-profit membership organization committed to preserving the natural history of our region through research, documentation, and public education." THE GREAT FRONT RANGE FLOOD OF 2013 Last September well over a foot of rain fell in parts of Boulder County in just a few days. Both the breadth and duration of the storm were historic. It smashed rainfall records for most rainfall in a day, in a month, and in a year. It’s been called a 100-year flood, a 500-year flood, and a 1000-year flood. Fourteen counties in northern Colorado were affected. The following articles assess the flood damage and ongoing clean-up on city and county parks and open space, and the continuing danger of landslides in Boulder County. After the Floods: Restoring Important Water Corridors On City of Boulder Open Space and Mountain Parks Laurie Deiter More than eight months have passed since flood waters washed across Open Space and Mountain Parks lands, damaging infrastructure and altering important ecosystems. Since then, roads have been repaired. Trails have been reopened. Bridges have been rebuilt. However, some areas home to many species of wildlife still bear the scars of flooding. In fact, it may take decades for some important riparian corridors stream-area habitat – also known as drainages – to fully recover from the loss of vegetation. That may pose challenges for local wildlife that depend on shrubs and plants in drainages for food and protection. Laurie Deiter, an OSMP natural resource specialist, explains how the September floods altered many local drainages and why the City of Boulder needs the cooperation of the public to help those important ecological areas heal. What happened to Boulder-area drainages during the September floods? Many of the drainages around Boulder have been altered significantly. The intense water flow down these dry or seasonally wet drainages caused scouring, and in many places, removed large swaths of vegetation. It also eroded channels and transported vast amounts of sediment to different locations. Many of the drainages on OSMP land that were once previously crowded with shrub thickets and riparian vegetation are now exposed cobble beds or have deeply-cut gullies that are prone to more erosion. What needs to be done to help restore those flood-affected areas? Most drainages influenced by the flood benefit ecologically from this type of disturbance and will recover naturally, although it could take a long time. Some riparian corridors will receive assistance from OSMP staff and volunteers, who will plant native trees and shrubs, sow native seed, and install erosion control treatments to speed recovery and stabilize embankments. Other restoration efforts, such as educational signs and fencing, may occur where these newly exposed drainages cross trails to discourage visitor use. These areas support numerous wildlife species, with many likely facing difficulties adapting to their flood-altered landscapes and visitor use is not compatible. How do you expect OSMP restoration efforts to help wildlife? Many wildlife species like bears, lions, birds and insect pollinators depend on these riparian corridors for food, shelter and safety. Planting fruit-producing shrubs like plum and chokecherry will provide a food source for numerous wildlife species. Numerous migratory songbirds that rely on berry-producing shrub lands for food and cover will also benefit from these OSMP restoration efforts. (continued on page 2) Historic stone bridge on Enchanted Mesa Trail
Transcript
Volume 32, Number 3 Summer 2014
Boulder County Nature Association "The Boulder County Nature Association is a private, non-profit membership organization committed to preserving the natural history of our region through research, documentation, and public education."
THE GREAT FRONT RANGE FLOOD OF 2013
Last September well over a foot of rain fell in parts of Boulder County in just a few days. Both the breadth and duration of the storm were historic. It smashed rainfall records for most rainfall in a day, in a month, and in a year. It’s been called a 100-year flood, a 500-year flood, and a 1000-year flood. Fourteen counties in northern Colorado were affected. The following articles assess the flood damage and ongoing clean-up on city and county parks and open space, and the continuing danger of landslides in Boulder County.
After the Floods: Restoring Important Water Corridors On City of Boulder Open Space and Mountain Parks
Laurie Deiter
More than eight months have passed since flood waters washed across Open Space and Mountain Parks lands, damaging infrastructure and altering important ecosystems. Since then, roads have been repaired. Trails have been reopened. Bridges have been rebuilt. However, some areas home to many species of wildlife still bear the scars of flooding. In fact, it may take decades for some important riparian corridors stream-area habitat – also known as drainages – to fully recover from the loss of vegetation. That may pose challenges for local wildlife that depend on shrubs and plants in drainages for food and protection. Laurie Deiter, an OSMP natural resource specialist, explains how the September floods altered many local drainages and why the City of Boulder needs the cooperation of the public to help those important ecological areas heal. What happened to Boulder-area drainages during the September floods? Many of the drainages around Boulder have been altered significantly. The intense water flow down these dry or seasonally wet drainages caused scouring, and in many places, removed large swaths of vegetation. It also eroded channels and transported vast amounts of sediment to different locations. Many of the drainages on OSMP land that were once previously crowded with shrub thickets and riparian vegetation are now exposed cobble beds or have deeply-cut gullies that are prone to more erosion. What needs to be done to help restore those flood-affected areas? Most drainages influenced by the flood benefit ecologically from this type of disturbance and will recover naturally, although it could take a long time. Some riparian corridors will receive assistance from OSMP staff and volunteers, who will plant native trees and shrubs, sow native seed, and install erosion control treatments to speed recovery and stabilize embankments. Other restoration efforts, such as educational signs and fencing, may occur where these newly exposed drainages cross trails to discourage visitor use. These areas support numerous wildlife species, with many likely facing difficulties adapting to their flood-altered landscapes and visitor use is not compatible. How do you expect OSMP restoration efforts to help wildlife? Many wildlife species like bears, lions, birds and insect pollinators depend on these riparian corridors for food, shelter and safety. Planting fruit-producing shrubs like plum and chokecherry will provide a food source for numerous wildlife species. Numerous migratory songbirds that rely on berry-producing shrub lands for food and cover will also benefit from these OSMP restoration efforts.
(continued on page 2)
Historic stone bridge on Enchanted Mesa Trail
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(After the Flood, continued from page 1) What kind of effects can people have in these flood-affected areas? Injury to the recovering vegetation and increased stress on wildlife is of great concern. Native plants will continue to germinate along the embankments and sediment deposits within these riparian areas. Trampling by visitors will increase the time it will take to reestablish an area. In addition, wildlife isn’t used to seeing visitors in these critical nesting, forage and movement corridors, so it’s important to stay out. Eliminating visitor use will help provide safety for those species that call these areas home or travel through them. Visitor safety is also of concern as these unstable drainages continue to erode, and trees and large rocks may break free. How long will it take for these areas to recover? Boulder’s semi-arid climate and often rocky soils can hamper vegetative growth. Some drainages are currently cobble beds and ecological succession will take many decades. However, other flood-impacted drainages have exposed banks and sediment deposits which will allow a diverse patchwork of shrubs and riparian vegetation to establish relatively quickly. Future weather events will assuredly further change the landscape and add to the mosaic of habitats in these areas. Reprinted, with permission, from the City of Boulder Open Space and Mountain Parks website, https://bouldercolorado.gov/osmp/riparian-restoration.
Landslides in Northern Colorado Front Range an Ongoing Hazard
A recent report from the U. S. Geological Survey states that the combination of landslides and flooding following the Big Rain of September 2013 was responsible for eight fatalities, three of them attributed to a fast-moving type of landslide called a debris flow. After a review of historical records in Colorado they concluded that this type of rainfall event, with widespread landslides and flooding over a very large region, in such a short period of time, is rare. “These debris flows occurred across a large elevation and climatic gradient extending from the high-plains to the alpine environment. . . . Some debris flows occurred above treeline and in recent burn areas having little to no vegetation. Other debris flows occurred on grass-covered slopes, and still others occurred on slopes covered by thick, mature conifer trees. The common link between nearly all debris flows observed was that they began as discrete sliding masses that moved downslope as a fluidized mixture of sediment and water. Thicknesses of these initial slides ranged from about 30 cm to more than 5 meters. Travel distances of resulting debris flows ranged from tens of meters to five kilometers.” “ . . . debris flows exacerbated flooding by supplying sediment to stream valleys. This sediment was mobilized by floods and in some cases caused surging flood pulses that destroyed buildings and infrastructure. The size of this sediment ranged from silt up to 3-meter-diameter boulders.” The report warns of ongoing hazards throughout the affected area: “After the rain stopped, rock fall continued at a higher than normal frequency at least through the end of September. Field observations indicated that soils, fractured bedrock, and boulders on many slopes, particularly canyon walls, were disturbed and loosened by the September rainfall. These areas will be susceptible to catastrophic failure during rainstorms and snowmelt for several years. Motorists, cyclists, and pedestrians should be aware of this potential hazard and use caution when traveling in the Front Range canyons.” See www.usgs.gov for additional information. See www.bouldercounty.org for a “Post-flood Preparedness” guide, and go to You-tube for an excellent short video: Debris flow events in Colorado.
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Aftermath of the 2013 Flood
Boulder County Parks and Open Space Sally Wier
In the 4.5 billion years that Earth has existed, the arrangement of its lands and waters has altered enormously. Continents have come and gone, oceans have taken on many shapes and sizes, and mountains have been washed to the oceans via rivers and streams. We often disassociate ourselves from these geographic changes because the time scales involved are so vast. Yet with the flood of September 2013, we were very viscerally reminded that geologic time includes now. The Earth is a dynamic, changeable place, and as much as we like to believe that our lives are stable, under control and predictable, all aspects of our planet are inherently impermanent. The most dramatic geographic changes that occurred with September’s floods were the rearrangement of creek and river paths on the landscape. The record-breaking rains caused channels of streams and rivers to fill to the brim. The waters then spilled out onto the surrounding floodplains—areas which border water courses but are normally dry. During the peak of the flooding, many Boulder County creeks were transporting over 100 times their normal volumes of water and, as a result, also carried along silt, sand, rocks and other debris including trees and cars. Flooding rivers powerfully re-carve their paths of travel. Water, driven by the force of gravity, flows to the oceans. Surging flood waters find the path of least resistance on their way towards the lowlands, meaning a swollen river will often cut a new channel. The rechanneling of rivers, such as the St. Vrain, can heavily impact humans. Boulder County Parks and Open Space properties were extensively damaged by the flooding. There was damage to trails, trailheads, restrooms, and historic buildings. There was also severe damage on agricultural properties. Some properties may take months, perhaps years, to repair. A few may not be possible to repair. We have massive damage to many properties along the St. Vrain River and many dams were breached. The damage to lakes and our water infrastructure could easily be the most difficult aspect of flood recovery for the Parks and Open Space Department. The department has our work cut out, and there is no doubt that the very able staff and thousands of volunteers will be up to the challenge! This article is reprinted, with permission, from Images, the newsletter for the Boulder County Parks and Open Space Department. Sally Wier works in Education and Outreach for the department.
Debris Removal: Western Mobile
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SCOTT WEIDENSAUL
Lecture on Extinction, August 24th
Famed author and naturalist, Scott Weidensaul, will be visiting Boulder this summer. Scott has published over two dozen natural history books, including Living on the Wind: Across the Hemisphere with Migratory Birds, a Pulitzer Prize finalist, The Ghost with Trembling Wings, about the search for species that may or may not be extinct, and Of a Feather: A Brief History of American Birding. He lectures widely on wildlife and environmental topics, and is an active field researcher, specializing in birds of prey and hummingbirds. Scott will be presenting a talk on extinction on August 24
th at 2:00, followed by an
informal reception. Further details will be available shortly on BCNA’s website, www.bcna.org. Scott will also be the keynote speaker at Boulder County Audubon’s 40
th Anniversary celebration on the
evening of August 23. For additional information, go to http://www.boulderaudubon.org/40th-anni.htm. See Scott’s website, www.scottweidensaul.com, for more information about his life and work.
American Redstarts at Chatfield State Park Paula Hansley
I took participants in my BCNA “Boulder Area Warbler” class this spring to Chatfield State Park for one of our field trips. We walked the Kingfisher Bridge trail, which goes through a wide riparian area along the South Platte River, and were treated to many different species of birds. We heard and saw dozens of Yellow Warblers and Least Flycatchers (one of the only places where this flycatcher nests in the Front Range). Vireos, a group of birds often confused with warblers, were present in good numbers—we saw the (rare) Red-eyed, as well as Warbling Vireos and Plumbeous Vireos. Noisy Yellow-breasted Chats were plentiful, but not easy to find. One of our goals was to find the resplendent American Redstart, which has had a nesting “colony” along this trail for many years. All class members on the trip got excellent views of a flitting orange and black male redstart and were able to hear his distinctive song. Dr. Kerrie Bryan (who serves on BCNA’s board of directors) was even able to take many great images of this gorgeous bird! Unfortunately, this colony has greatly decreased in the number of pairs; we only heard two males on the west side of the Platte. The decline may be due to the growth of the cottonwood trees (J. Kellner, 2014). The redstart prefers second growth cottonwoods, and most trees along the river now are mature and quite tall (100 feet).
Letter from BCNA President, Sue Cass Soon, you will have a companion to nestle with your BCNA field guide, Butterflies of the Colorado Front Range. For over a year, the Publications Committee has been hard at work on Dragonflies of the Colorado Front Range, written by Ann Cooper, edited and designed by Steve Jones, Lysa Wegman-French and George Oetzel and with gorgeous photos taken by local photographers, a "labor of love" without a hint of cliché! We expect delivery in August or early September, so all Supporting members and above keep an eye on the mailbox and enjoy learning more about these strangely fascinating creatures. Thank you, Publications Committee! The Boulder County Nature Association's mission statement located on the masthead of this and every newsletter you receive is the beating heart of this organization and every member who advances that mission is its lifeblood--its vital, animating source! Without the injection of time, energy, ingenuity and passion, the noble mission withers. Fortunately, devoted adherents to the mission come forward and not surprisingly so in a place like Boulder County where the boundless blessings of Nature permeate us to the core. Can you feel it? If you do, use that wellspring to infuse the mission with the assurance of a long and productive life. Join us! We're on a mission!
Volunteers Wanted for BCNA Finance Committee
No particular skills are necessary but it would be great to have someone with bookkeeping or accounting skills on the committee. Volunteers should plan to spend 2 to 5 hours per month helping out. If you can contribute your skills, contact our Treasurer, Howard Witkin, 303-789-4950.
American Redstart by Kerrie Bryan
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2014 Front Range NABA Butterfly Counts
July 4th
, Cal-Wood Count. For 35 consecutive years the Cal-Wood Education Center in Jamestown has hosted the North American Butterfly Count. This 36th annual one-day count will take place on July 4, 2014 with children and adults invited. This is a learning situation for many of the participants with identification in the field assisted by experienced butterfly naturalists. Cal-Wood has large, safe open meadows with riparian areas at 6,800 ft above sea level. Cost: $3.00 to register for the NABA Count. Children may register for $3.00 if they would like their names listed in the annual records. Meet at 7:45 a.m. at Safeway Grocery’s northern parking lot facing Iris, west of 28
th St., Boulder, to carpool. 7:45 a.m. until
3:00 p.m. Call 303-494-1108 or e-mail [email protected]. Add subject line ‘Butterfly’. Let us know you’re coming. Butterflies of the Colorado Front Range with 80 photos, by Chu and Jones is available for $14.00. July 6
th, Gilpin Count. This is the 40
th year for the
Gilpin Count established by Ray Stanford. In some years up to 100 species have been observed. We will be meeting at the customary place – just east of Tunnel 1 on Colorado Rte 6 in Clear Creek Canyon around 8:15 AM. This meeting area is a gravel parking area on the south side of US 6, 0.8 miles west of the CO Rte 93 intersection in Golden. Gordon Revey Cell: 303-902-4287, email [email protected] or Ellen Shannon Cell: 303-653-5351, email [email protected] Please call us or e-mail us with subject line "Butterfly" to let us know, if you are planning to attend and for additional information. Notes for Both Counts: Be sure to wear hiking shoes or boots (no sandals or open-toed shoes), hat, long-sleeve shirt, slacks. Bring lunch, water, sunscreen, binoculars, butterfly book. Both counts are reported to North American Butterfly Association (NABA) $3.00 per person for each count. If you want the printed compilation, it is an additional $7 charge.
Saturday, August 9th, 9 am to12 noon, Lichens.
Sponsored by Colorado Native Plant Society. Location to be determined. Dr. Erin Trip will take us on a hike to explore the fascinating world of lichens. Erin serves as Curator of Botany (COLO Herbarium) of the CU Museum of Natural History, as well as Assistant Professor of Ecology & Evolutionary Biology (EBIO). Erin is a biodiversity scientist whose research focuses on the diversity and evolution of flowering plants as well as lichens. Contact Megan Bowes for details and registration information: [email protected] or 303-561-4883.
SUMMER CALENDAR Thursday, July 10
th, 5:30 pm to twilight, Caribou
Ranch—Conifers and Colorful Wildflowers Galore. Sponsored by Colorado Native Plant Society. Join Linda Boley for an evening posey mosey to see amazing wildflower and conifer diversity and possibly a moose at one of Boulder County Parks and Open Space’s montane parcels. Contact Megan Bowes for details and registration information: [email protected] or 303-561-4883. Saturday, July 12
th, 6 am to 2 pm, Birds of Brainard
and Long Lakes. Sponsored by Boulder County Audubon. Leave the heat of the plains when you join mountain man, David Dowell, on this high elevation search for alpine birds. The marshes and willow carrs at Brainard are perfect habitat for Fox and Lincoln’s Sparrows, Wilson’s and McGillivray’s Warblers. The pine forests should grace us with jays, flycatchers, woodpeckers and, with any luck, Red Crossbills and Dusky Grouse. Bring rain gear and lunch and be prepared to hike 3 to 4 miles. Limited to 10, send an email to David at: [email protected] to register. Carpool from the Justice Center lot at 6th and Canyon in Boulder. Sunday, July 20
th, 10 am to 12 noon,
Butterflies, Wildflowers and Host Plants. Sponsored by Colorado Native Plant Society. Meet at Boulder OSMP’s South Mesa Trailhead. Join Amy Yarger and members of the Colorado Butterfly Monitoring Network on one of their established census routes along the Homestead Trail. Contact Megan Bowes for details and registration information: [email protected] or 303-561-4883. Saturday, August 2
nd,8 am to 12:30 pm,
Hummingbirds and a Potluck! Sponsored by Boulder County Audubon. We will start the day by meeting at the Park and Ride in Lyons (7600 Niwot Road), for a walk along Old South Road for a look at resident breeders. Birds commonly found here are Canyon Wrens, White-throated Swifts, Catbirds, Orioles and Grosbeaks. Then, it will be on to Davis’s feeding stations at his beautifully located home in Spring Gulch. There, we can count on at least three species of Hummingbirds and maybe four: Broad-tailed, Rufous, Calliope and even Black-chinned. His feeders and nest boxes attract many other foothills species, including Nuthatches, Bluebirds and Pinyon Jays. Bring something inspired and nutritious to share. For additional information, contact Raymond Davis at 303 823 5332.
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We invite you to report your sightings to www.coloradofrontrangebutterflies.com
Introducing New Board Member, Kerrie Bryan I had the good fortune to inherit my family’s love of the Australian bush and the natural world. My father was interested in everything in the natural world and he passed that interest and love to me as we spent many days in the Australian countryside bird-watching and always on the lookout for kangaroos, koalas, and other Australian mammals, as well as reptiles. Before I retired from my educator position on the East Coast of the U.S., I travelled many times to Colorado and fell in love with open sky and the abundance of the natural world. Boulder County especially impressed me with its open space policy. Six years ago, I retired to Longmont and subsequently took the Volunteer Naturalist training offered by Boulder County Parks and Open Space Department. It was through a presentation by a member of BCNA and the distribution of the BCNA newsletter that I became familiar with this wonderful organization. I took classes, participated in raptor surveys and met many people of like mind. I am truly grateful for the
opportunity to be an active participant of this organization.
BCNA Board of Directors President Sue Cass 720-684-6922 Vice-President Megan Bowes 303-561-4883 Treasurer Howard Witkin 303-789-4950 Secretary Shirley Jin 303-499-1574 Kerrie Bryan 303-834-8151 Peter Kleinman 303-554-5320 Cindy Maynard 720-203-8211 Mary Stuber 303-644-9773 Claudia Van Wie 303-494-2250
Committees and Contacts
- Avian Species of Special Concern Dave Hallock [email protected] Steve Jones [email protected] - Conservation Chair Position Open - Ecosystem Stewardship Steve Jones 303-494-2468 - Education Steve Jones 303-494-2468 - Indian Peaks Bird Counts Dave Hallock 303-258-3672 Bill Kaempfer 303-954-8998 - Membership Cindy Maynard 720-203-8211 Terry Stuart 303-449-2232 - Newsletter Dianne Andrews, content editor 303-823-6779 Carol McCasland, layout 303-635-6433 - Publications Sue Cass 720-684-6922 - Research Grants Peter Kleinman 303-554-5320 - State and Regional Wildlife Issues Peter Kleinman 303-554-5320 - Wintering Raptor Survey Sue Cass 720-684-6922 - Nature Net Moderator Scott Severs [email protected] - Website and Support for Newsletter Claudia Van Wie 303-494-2250, [email protected] George Oetzel 303-543-3712 - Facebook Page and BCNA Buzz Cindy Maynard 720-203-8211, [email protected]
Don’t Miss Out on the BCNA BUZZ If you are not receiving the BUZZ, I don’t have your correct email address. Not sure? Just send me a quick email and I will have it! [email protected]
Land Conservation Awards Honor Two of BCNA Founders
On April 9, the Boulder County Parks and Open Space Department held its annual Land Conservation Awards ceremony. Rich Koopmann and Dave Hallock, among the early founders of the Boulder County Nature Association over 30 years ago, both received well-deserved awards for their decades of dedication to protection of the natural resources of Boulder County. Rich Koopmann received the Land Conservation Award, which “honors individuals, families, and organizations whose contributions demonstrate notable achievements in preserving Boulder County’s agricultural lands. Rich Koopmann was recognized for his outstanding achievement in land preservation and stewardship. For over 35 years, Koopmann worked for Parks and Open Space as a water resource specialist, historic preservation specialist, planner, mentor, and persistent champion of Boulder County’s open space program. Koopmann also was instrumental in the creation of the Boulder County Nature Association and the Parks and Open Space Foundation.” Dave Hallock received the Environmental Stewardship Award, which “recognizes individuals, families or organizations that make significant contributions in land protection and/or management. Dave Hallock served an essential role in the recent update of the Environmental Resources Element (ERE) of the Boulder County Comprehensive Plan. This document guides the preservation or restoration of all natural resources in the county, including wildlife species, critical wildlife habitat, environmental conservation areas, and their attendant ecosystems. Hallock collaborated with county staff to update maps, lists, and criteria. He shared a vast amount of information, updates, anecdotes, and history which allowed Boulder County to rebuild the ERE as a stronger, highly-accurate, and applicable information source and as a planning document for wildlife and natural resources in the county.” Award citations are from www.bouldercounty.org/dept/openspace, where you can find information on other award winners.
WINTERING RAPTOR SURVEY Sue Cass
The 2013-2014 wintering raptor season in Boulder County was fairly normal with perhaps one exception. Like most of the central and southern United States, Colorado experienced an anomalous influx of Rough-legged Hawks and we think we know why. The northern part of the country, especially the upper Midwest and Northeast, experienced one of the most brutal winters in recent memory, all due to a meteorological phenomenon called a "polar vortex" which is described as a "large- scale cyclone" or a "cold core low-pressure area" located over the boreal and austral poles in winter. Polar vortices, breaking away from normal circulation and dipping into southern Canada and the northern U. S., were apparently too much for the Rough-legs who, interestingly, are called "birds of perpetual winter" by some birders. Rough-legs pushed further south in large numbers and were even recorded in the state of Florida, which gives new intrigue to the term "snow bird". It will be interesting to see if the enhanced number of Rough-legs translates to a spike on the graph. We'll let you know. A total of 77 monitors participated in the 2013-2014 BCNA Wintering Raptor Survey and contributed 700 volunteer hours, a new record on both counts! Thank you, John Adams, Allison Ashby, Dale and James Ball, Steve Beig, Jean Bettenhausen, Liza Boyle, Barbara Brandt, Kerrie Bryan, Ron Butler, Sue and Alan Cass, AD Chesley and husband Paul Culnan, Al and Kevin Clark, George Coffee, Sue Cornich, Michael and Jean Delaney, Clarence and Betty Ellsworth, Fern Ford, Linda Gathany, Victor Germain, Sallie Greenwood, Bill Gumbart, Ed Hall, Bill and Brinda Henley, Jennifer Hyppio, Sam Jaffe, Steve Jones, Will Keeley and sons Sean and Quinn, Elena Klaver, Kristin Laubach, Viki Lawrence, Skye Lewis, Joe Lupfer and wife Karen Clark, Petrea Mah, Jo Manternach, Topiltzen Martinez, Cindy Maynard, Carol McCasland, Doyle McClure, Joe and Beccy Pem, Alex Posen, Sue and Mark Ponsor, Lyle Rosbotham, Ira and Tammy Sanders, Carol Sazama, Elizabeth Slavensky, Jean Sobolik, Joel and Marcel Such, Wendy Sydow, Jerry Spangler, Darin Toohey, Tom and Tineke Van Zandt, Mark Venzke, Mort and Lysa Wegman-French, Maribel Williams, Kristi Winseck and son Kevin, Howard and Pattiann Witkin, Jean Wolbier, George Young and Greg Young. Connect with nature:
Support the Boulder County Nature Association Name
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Type of Membership:
Student/Senior (65 or over) $15 General Member $20 Family or Household $30 Supporter $40 Founder $100 Life Member $300 Corporate $500 _______ Donation to General Research Grants _______ Donation to Evenson Big Cat Research Grants _______ Donation to General Research Fund The membership year is January 1 to December 31. Those who join after October 1 are considered members in good standing through the following year. All members receive this quarterly newsletter. Supporter-level members and higher also receive a complimentary copy of each BCNA publication.
Please make checks payable to "Boulder County Nature Association" or "BCNA" and mail to: P.O. Box 493, Boulder, CO 80306. Boulder County Nature Association P.O. Box 493 Boulder, CO 80306
