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Documents disponibles écrits par cet auteur (7)
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Article
Ioana Chiver, Auteur ; César A. Jaramillo, Auteur ; Eugene S. Morton, AuteurBirds often mob potential predators, which alerts other prey individuals of the danger and drives the predator away. Participation in, or increased intensity of mobbing is often associated with breeding activity suggesting an important function [...]
Article
Lance G. Woolaver, Auteur ; Rina K. Nichols, Auteur ; Eugene S. Morton, Auteur ; Bridget J. M. Stutchbury, AuteurRidgway's Hawk Buteo ridgwayi is a Critically Endangered forest raptor endemic to the island of Hispaniola in the Caribbean. The species is currently limited to a small area on the north-east coast of the island, with fewer than 110 pairs remain[...]
Article
Ioana Chiver, Auteur ; Bridget J. M. Stutchbury, Auteur ; Eugene S. Morton, AuteurRecent studies of tropical birds with year-round territoriality indicate that song rate is relatively low year-round in association with lower seasonality and relatively stable social environment over the year. We examined seasonal variation in [...]
Article
Bridget J. M. Stutchbury, Auteur ; Eugene S. Morton, Auteur ; Bonnie Woolfenden, AuteurLittle is known about the genetic mating systems of tropical passerines and how they vary among species. We studied the Lesser Elaenia (Elaenia chiriquensis) and the Yellow-bellied Elaenia (E. flavogaster) near Gamboa, Panama. These species bree[...]
Article
Lance G. Woolaver, Auteur ; Rina K. Nichols, Auteur ; Eugene S. Morton, Auteur ; Bridget J. M. Stutchbury, AuteurRidgway's Hawks (Buteo ridgwayi) are critically endangered forest raptors endemic to the Caribbean island of Hispaniola, with approximate to 100 pairs remaining in the world. The species is ecologically little known yet such studies are importan[...]
Article
Bridget JM Stutchbury, Auteur ; Eugene S. Morton, Auteur
Article
Ioana Chiver, Auteur ; Bridget J. M. Stutchbury, Auteur ; Eugene S. Morton, AuteurTestosterone is important in mediating investment in competing activities such as territoriality, parental care, and maintenance behavior. Most studies of testosterone function have focused on temperate species and less is known about the role o[...]
