Results 81 to 90 of about 47,339 (326)
Sexually size dimorphic brains and song complexity in passerine birds [PDF]
, 2004 Neural correlates of bird song involve the volume of particular song nuclei in the brain that govern song development, production, and perception. Intra- and interspecific variation in the volume of these song nuclei are associated with overall brain ...
Eens, Marcel +3 more
core +2 more sources
, 2016 Despite predictions of poleward and upslope shifts in the distribution of breeding passerines under climate change, studies often report variable responses with some species shifting opposite of the expected direction and others showing range stability ...
Jeremy D. Mizel +3 more
semanticscholar +1 more source
Oikos, EarlyView.Phenological shifts caused by climate change are increasingly documented in wild populations. These events may be inferred by examining changes in population abundance and age structure throughout the breeding season, often using citizen science. However, several gaps still limit optimal use of such data.
Paul Cuchot, Luis‐Miguel Chevin
wiley +1 more source
Journal of Veterinary and Animal SciencesThe study examined 76 pet bird carcasses at the Department of Veterinary Pathology, CVAS, Mannuthy. The birds were categorised into four major groups: Psittaciformes, Passeriformes, Columbiformes and Galliformes.
C. Udhayakumar +6 more
doaj +1 more source
Sperm length variation as a predictor of extrapair paternity in passerine birds. [PDF]
PLoS ONE, 2010 The rate of extrapair paternity is a commonly used index for the risk of sperm competition in birds, but paternity data exist for only a few percent of the approximately 10400 extant species.
Jan T Lifjeld +4 more
doaj +1 more source
Fruit use and fruit processing by euphonias, specialized avian frugivores
Oikos, EarlyView.Euphonias (Neotropical passerines in the genera Euphonia and Chlorophonia) form the quintessential example of a specialized avian frugivore, combining a high reliance on fruit as food and the restriction of fruit taxa exploited. To understand their specialization, we explored the integration of fruit morphological and nutritional traits with their ...
Marco A. Pizo +3 more
wiley +1 more source
Passeriformes: nest predators and prey in a Neotropical Savannah in Central Brazil
Zoologia (Curitiba), 2009 The identification of predators of birds' nests, crucial to a better understanding of predator-prey interactions, remains poorly known. Here we provide evidence that birds, and especially passerines, may depredate birds' nests in the Cerrado (Neotropical
Leonardo F. França +10 more
doaj +1 more source
Passerine morphology: external measurements of approximately one‐quarter of passerine bird species [PDF]
Ecology, 2017 AbstractStudies of community organization and clade diversification that include functional traits have become an important component of the analysis of ecological and evolved systems. Such studies frequently are limited by availability of consistently collected data. Here, I present a data set including eight measurements of the external morphology of
openaire +2 more sources
People and Nature, EarlyView.Abstract Different aspects of ecological systems, biotic or abiotic, often fluctuate in coordinated patterns over space and time. Such high concordance between ecological processes is often referred to as ecological synchrony. Human activities, including and beyond climate change, have the potential to alter ecological synchrony by disrupting or ...
Yiluan Song +9 more
wiley +1 more source