Contact calls are used for individual mate recognition in free-ranging green-rumped parrotlets, Forpus passerinus
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منابع مشابه
Long-term Studies of the Green-rumped Parrotlet (forpus Passerinus) in Venezuela: Hatching Asynchrony, Social System and Population Structure
– Few Neotropical birds have been the subject of long-term ecological and behavioral research. I present highlights from 19 years of studies on the Green-rumped Parrotlet (Forpus passerinus) in the llanos of Venezuela, based on marking and resighting over 7500 individuals and monitoring of 2500 nesting attempts in two populations breeding in nest boxes. Initial work focused on the causes and co...
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Learned birdsong is a widely used animal model for understanding the acquisition of human speech. Male songbirds often learn songs from adult males during sensitive periods early in life, and sing to attract mates and defend territories. In presumably all of the 350+ parrot species, individuals of both sexes commonly learn vocal signals throughout life to satisfy a wide variety of social functi...
متن کاملFactors shaping the ontogeny of vocal signals in a wild parrot.
Parrots rely heavily on vocal signals to maintain their social and mobile lifestyles. We studied vocal ontogeny in nests of wild green-rumped parrotlets (Forpus passerinus) in Venezuela. We identified three successive phases of vocal signaling that corresponded closely to three independently derived phases of physiological development. For each ontogenetic phase, we characterized the relative i...
متن کاملAgainst the odds? Nestling sex ratio variation in green-rumped parrotlets
We investigated nestling sex ratio variation in the green-rumped parrotlet (Forpus passerinus), a small neotropical parrot breeding in central Venezuela. There are strong theoretical reasons to predict a female-biased sex ratio in this system according to the local resource hypothesis; juvenile males are philopatric and there are high levels of competition between male siblings for access to br...
متن کاملVariation in the Onset of Incubation in a Neotropical Parrot
We studied the onset of incubation in the Green-rumped Parrotlet (Forpus passerinus), a cavity-nesting species with female-only incubation starting on the first egg and asynchronous hatching. We quantified how the onset of incubation varied among individual females, with stage of egg-laying and by ultimate clutch size. We then examined whether this variation affected the incubation period and h...
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