title: Does Exurban Housing Development Affect the Physiological Condition of Forest-Breeding Songbirds? A Case Study of Ovenbirds (Seiurus aurocapillus) in the Largest Protected Area in the Contiguous United States.
abstract: Exurban development (low-density development in rural areas) can significantly alter wildlife community composition, but it is largely unknown whether it also affects wildlife at the individual level. We investigated individual-level impacts of exurban development in New York State's Adirondack Park by comparing the physiological condition of 62 male ovenbirds (Seiurus aurocapillus) breeding in forests with low-density housing development with those in contiguous forests. We used hematocrit (HCT) volume and plasma triglyceride (TRIG) levels to compare energetic condition, plasma uric acid (UA) and total plasma protein (TPP) levels to compare diet quality, and heterophil∶lymphocyte ratios (H∶L) to compare chronic stress. HCT was the only parameter to differ, with birds near houses exhibiting lower values. The comparable TRIG, UA, and TPP that we found between treatment types suggest that ovenbird food quality and availability are unaffected by exurban development in our study area. Similar H∶L suggests that homeowner activities do not significantly change chronic stressors faced by breeding male ovenbirds. We also found no difference in body mass, body size, or age ratio to indicate that habitats in either treatment type were in higher demand or more difficult to acquire. Although our results suggest that exurban development does not reduce habitat quality for male ovenbirds in a way that affects their condition, we caution that it may still ultimately reduce fitness by attracting synanthropic predators. Further work is needed to better understand the impacts of exurban development on wildlife at all levels and provide science-based information needed to meet conservation challenges in rapidly developing exurban areas.
authors.affiliation: Natural Resources Department, Allee King Rosen and Fleming, 34 South Broadway, White Plains, New York 10601; and Department of Environmental Studies and Science, Pace University, 861 Bedford Road, Pleasantville, New York 10570; 2Wildlife Conservation Society, Adirondack Program, 132 Bloomingdale Avenue, Saranac Lake, New York 12983; 3Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, 85 Lomb Memorial Drive, Rochester, New York 14623.
authors.forename: Chad L
authors.initials: CL
authors.lastname: Seewagen
authors.forename: Michale
authors.initials: M
authors.lastname: Glennon
authors.forename: Susan B
authors.initials: SB
authors.lastname: Smith
mesh_terms: D000818:Animals; D030161:Avian Proteins / Q000097:blood; D049628:Body Size; D003247:Conservation of Natural Resources; D017753:Ecosystem; D065928:Forests; D006400:Hematocrit; D008297:Male; D009518:New York; D046109:Passeriformes / Q000033:anatomy & histology / Q000097:blood*; D013312:Stress, Physiological; D014280:Triglycerides / Q000097:blood
chemical_list: D030161:Avian Proteins; D014280:Triglycerides