Habitat type and ambient temperature contribute to bill morphology

Climate, ecological release and bill dimorphism in an island songbird

(2013) R. Greenberg et al.   Biology Letters

THE INFLUENCE OF THE CALIFORNIA MARINE LAYER ON BILL SIZE IN A GENERALIST SONGBIRD

(2012) Russell Greenberg et al.   EVOLUTION

Heat Loss May Explain Bill Size Differences between Birds Occupying Different Habitats

(2012) Russell Greenberg et al.   PLoS One

The Island Syndrome in Coastal Wetland Ecosystems: Convergent Evolution of Large Bills in Mangrove Passerines

(2011) David Luther et al.   AUK

High summer temperature explains bill size variation in salt marsh sparrows

(2011) Russell Greenberg et al.   ECOGRAPHY

Geographical Variation in Bill Size across Bird Species Provides Evidence for Allen’s Rule

(2010) Matthew R. E. Symonds et al.   AMERICAN NATURALIST

Bill size and dimorphism in tidal-marsh sparrows: island-like processes in a continental habitat

(2010) Russell Greenberg et al.   ECOLOGY

Effect of flower shape and size on foraging performance and trade-offs in a tropical hummingbird

(2009) Ethan J. Temeles et al.   ECOLOGY

Heat Exchange from the Toucan Bill Reveals a Controllable Vascular Thermal Radiator

(2009) Glenn J. Tattersall et al.   SCIENCE

BREEDING ECOLOGY OF THE MANGROVE WARBLER (DENDROICA PETECHIA BRYANTI) AND COMPARATIVE LIFE HISTORY OF THE YELLOW WARBLER SUBSPECIES COMPLEX

(2008) JAVIER SALGADO-ORTIZ et al.   AUK

Body temperature depression and peripheral heat loss accompany the metabolic and ventilatory responses to hypoxia in low and high altitude birds

(2008) G. R. Scott et al.   JOURNAL OF EXPERIMENTAL BIOLOGY