
Environmental conditions are key drivers of life-history evolution, and the urban environment is an extreme form of land-use readily inhabited by avian wildlife, whose life-history variation in such altered environment is still poorly understood. Recently, the study of environmental variables associated with urban living—which include shifts in temperature, light, noise or food availability—has attracted increased attention. Another environmental axis that sets the urban space at odds relative to natural habitats is high human abundance, yet very little is known about its effect on avian fitness.
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Alex J. Ibis:Suppl. Lewis, Arjun Amar, Elisabeth C.
The great tit Parus major is a passerine bird in the tit family Paridae. It is a widespread and common species throughout Europethe Middle EastCentral and Northern Asiaand parts of North Africa where it is generally resident in any sort of woodland; most great tits do not migrate except in extremely harsh winters. Until this species was lumped with numerous other subspecies.
Parus caeruleus Linnaeus The Eurasian blue tit Cyanistes caeruleus [2] is a small passerine bird in the tit family, Paridae. It is easily recognisable by its blue and yellow plumage and small size.


Total recording duration Results format: detailed concise codes sonograms. I couldn't identify the repeated background sounds such as at 9.
Biology, images, analysis, design The forehead and a bar on the wing are white. The napewings and tail are blue and the back is yellowish green.
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Beak morphology exhibits considerable adaptive plasticity in birds, which results in highly varied or specialized forms in response to variations in ecology and life history. As the only parid species endemic to the Qinghai-Tibet Plateau, the Ground Tit Parus humilis has evolved a distinctly long and curved beak from other parids. An integration of morphometrics, phylogenetics, transcriptomics and embryology allows us to address the evolutionary and developmental mechanisms of the adaptive beak structure observed in the Ground Tit.
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