Oral Session #3: Avian Ecology.

Presiding: D.M. Engle, Oklahoma State University.
Sunday, August 6, 2000
8:15 AM to 12:15 PM
Superior Room - Cliff Lodge

8:15 AM	Sound transmission in tropical forests: Bird song convergence through habitat exploitation. SLABBEKOORN, H. , J. ELLERS, T. SMITH
8:30 AM	Vertical organization of the small bird community in an old-growth Douglas-fir/western hemlock forest. SHAW, D.C. , E. FREEMAN, C. FLICK
8:45 AM	Raptor population trends discerned from 23 years of migration monitoring in Nevada, Utah, and New Mexico. SMITH, J.P.
9:00 AM	Influence of life history strategies on bird population responses to stress. SABLE, S.E. , K.A. ROSE, J.E. AUGUSTINE
9:15 AM	A comparison of age ratios, site fidelity, and spatial arrangement of a shrub-nesting songbird in heavily deer-browsed and less-browsed habitats. HALL, K.R.
9:30 AM	Hummingbird foraging behavior in different patch types: Simulation of alternative foraging strategies. BAUM, K.A. , W.E. GRANT
9:45 AM	Relationships among breeding latitude, timing of migration, and wintering latitude in Wilson's Warblers as revealed by hydrogen stable-isotope ratios. KELLY, J.F. , V.A. ATUDOREI, Z.D. SHARP, D.M. FINCH
10:00 AM	Break
10:15 AM	Habitat and host selection by sympatric avian brood parasites in southeastern Arizona. CHACE, J.F.
10:30 AM	The role of small mammal predation on nesting success of grassland nesting birds. STANLEY, T.R.
10:45 AM	Effects of thermal loading on the nest microclimate of ground-nesting birds. SUEDKAMP, K.M , F.S GUTHERY, S.D FUHLENDORF
11:00 AM	Spatial patterns of population regulation and population viability in sage grouse (Centrocercus urophasianus spp.). IRVINE, R.L. , J.M. LAMONTAGNE, T.B. LOGAN, B.O. MA and C.M. ELKIN, E.E. CRONE
11:15 AM	Vigilance, feeding efficiency, and optimal group size of northern bobwhite coveys. WILLIAMS, C.K. , R.S. LUTZ, R.D. APPLEGATE
11:30 AM	Importance of rice fields for waterbirds in the Camargue wetland complex, southern France. TOURENQ, C. , R.E. BENNETTS, F. MESLéARD, J. MARTIN
11:45 AM	Gull-plant interactions: The pitter-patter of big feet. ELLIS, J.C.
12:00 PM	Patterns of song variation in different seasons in the bronzed cowbird support different evolutionary hypotheses. WARREN, P.