Résultat de la recherche
Résultat de la recherche
6 recherche sur le mot-clé libres 'Sexual dimorphism'
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Article
Nobuhle T. Mabhikwa, Auteur ; Margaret T. Hirschauer, Auteur ; Kerri Wolter, AuteurThe plumage of young Cape Vultures Gyps coprotheres is streaked to varying degrees on the breast, ruff and upper wing coverts. Observations of breast plumage (individual feather streak coverage and overall streaking intensity) were made on Cape [...]Article
Darren P. O’Connell, Auteur ; David J. Kelly, Auteur ; Seán B. A. Kelly, Auteur ; Síofra Sealy, Auteur ; Adi Karya, Auteur ; Kangkuso Analuddin, Auteur ; Nicola M. Marples, AuteurCompetition takes place not only between species but also within them. Intersexual competition for resources may increase sexual dimorphism in body size to minimise ecological niche overlap. Change in the level of sexual dimorphism in a species [...]Article
Anna M. Kearns, Auteur ; Lauren C. White, Auteur ; Jeremy J. Austin, Auteur ; Kevin E. Omland, AuteurThe Pacific Robin (Petroica multicolor) is a polytypic species, with 14 subspecies recognised in the tropical south-western Pacific Ocean. Like most of the avifauna of this region, the Pacific Robin has received little taxonomic attention since [...]Article
Dana Sela-Klein, Auteur ; Yizhar Lavner, Auteur ; Yoni Vortman, AuteurThe forces which shape avian species’ vocalization and coloration continue to draw scientific attention. The White-throated Kingfisher, (Halcyon smyrnensis), is a non-passerine, resident, generalist predator characterized by elaborate colors and[...]Article
Kentaro Kazama, Auteur ; Bungo Nishizawa, Auteur ; Shota Tsukamoto, Auteur ; Jordi E. Gonzalez, Auteur ; Mami T. Kazama, Auteur ; Yutaka Watanuki, AuteurSexual segregation in foraging habitats and associated diet differences have been reported in many seabirds. These sexual distinctions can be caused by differences in competitive ability or nutritional requirements. Here, we investigated the die[...]Article
Erik D. Enbody, Auteur ; Jordan Boersma, Auteur ; John Anthony Jones, Auteur ; Matthew W. H. Chatfield, Auteur ; Serena Ketaloya, Auteur ; Doka Nason, Auteur ; Daniel T. Baldassarre, Auteur ; Jenny Hazlehurst, Auteur ; Olivia Gowen, Auteur ; Hubert Schwabl, Auteur ; Jordan Karubian, AuteurThe White-shouldered Fairywren (Malurus alboscapulatus) is a tropical passerine bird distributed across much of New Guinea. White-shouldered Fairywrens are among few species of fairywren with exclusively tropical distributions and differ from be[...]