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Article
Elisabeth F. Purves, Auteur ; Mark A. Conboy, Auteur ; Raleigh J. Robertson, Auteur ; Paul R. Martin, AuteurABSTRACT Within species of birds, variation in plumage may allow potential mates or competitive rivals to quickly assess the quality of an individual. Little is known about the role of white tail feather patches (?tail white?) in male Cerulean W[...]
Article
Lesley Bulluck, Auteur ; David Buehler, Auteur ; Rachel Vallender, Auteur ; Raleigh J. Robertson, Auteur
Article
Kate J. Neville, Auteur ; Rachel Vallender, Auteur ; Raleigh J. Robertson, AuteurSex ratio biases in avian species remain controversial, although several studies have documented apparent facultative adjustment of offspring sex ratios. While hybridizing pied and collared flycatchers have exhibited sex ratio skews that may be [...]
Article
Terje Laskemoen, Auteur ; Oddmund Kleven, Auteur ; Lars Erik Johannessen, Auteur ; Frode Fossoy, Auteur ; Raleigh J. Robertson, Auteur ; Jan T. Lifjeld, AuteurSperm morphometry and motility are important male traits affecting fertility and post-copulatory competitive ability. However, studies examining consistency in sperm traits over time for individual males are rather scarce, particularly in free-l[...]
Article
Emily Anne McKinnon, Auteur ; Raleigh J. Robertson, Auteur
Article
Colleen A. Barber, Auteur ; Raleigh J. Robertson, AuteurIt is well established that extra-pair young are present to varying degrees in nests of most avian species. However, the timing of extra-pair copulations during a female's fertile cycle is not well known, nor is how these copulations translate i[...]
