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Emily Silverman & Kimberly Hall
Territory size and establishment in breeding
forest songbirds:
Implications for forest management and
conservation
Project objectives
• Develop accurate quantitative methods to measure the size and boundaries of breeding territories
• Investigate factors affecting the relationship between micro-habitat features, territoriality, and breeding densities
Isoclines of breeding neotropical migrant diversity Source: Price 1995Source: Price et al. 1995
Species richness of breeding neotropical migrant songbirds
Lightly-browsed Heavily-browsed
Thinned hardwoods in the Hiawatha National Forest
40% firs 1.5 m hgt
Warbler use
Yrs 0 1 2 3 4
Understory vegetation
1300 m
Observationsof singing males 1999
Methods
• Simulation model of bird movement & sampling strategies
• Territory mapping of 3 species with different patterns of micro-habitat use
• Vegetation mapping and measurement
• Observation of timing and location of spring arrivals