Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Sahas Barve"'
Publikováno v:
Journal of Field Ornithology, Vol 95, Iss 2, p 10 (2024)
Elevational gradients impact organisms in diverse ways because of lower temperatures and oxygen levels at higher elevations. Birds adapt to these constraints through changes in body size, plumage, metabolism, and behaviors such as elevational migrati
Externí odkaz:
https://doaj.org/article/801b4592d6814c0795331ec56643838d
Autor:
Guy Beauchamp, Sahas Barve
Publikováno v:
Biology, Vol 13, Iss 6, p 458 (2024)
Vigilance is a common behavioural adaptation to increase the chances of detecting predators before it is too late to escape. Behavioural traits are often repeatable among individuals over the long term, suggesting differences in personality. Earlier
Externí odkaz:
https://doaj.org/article/7fcaae0253c8446c8ba632552af8518a
Autor:
Guy Beauchamp, Sahas Barve
Publikováno v:
Animals, Vol 13, Iss 9, p 1524 (2023)
Sentinels can detect predators and rivals early by monitoring their surroundings from vantage points. Multiple sentinels in a group may reduce the perceived predation risk by diluting the risk and increasing collective detection, especially if sentin
Externí odkaz:
https://doaj.org/article/55da9be035c741348559b9715521a046
Autor:
Farah Ishtiaq, Sahas Barve
Publikováno v:
BMC Ecology, Vol 18, Iss 1, Pp 1-12 (2018)
Abstract Background Montane birds which engage in elevational movements have evolved to cope with fluctuations in environmental hypoxia, through changes in physiological parameters associated with blood oxygen-carrying capacity such as haemoglobin co
Externí odkaz:
https://doaj.org/article/717ff9b624044d7492bd91db814db72e
Publikováno v:
Frontiers in Ecology and Evolution, Vol 7 (2019)
Cooperative breeding groups often involve “helpers-at-the-nest”; indeed, such behavior typically defines this intriguing breeding system. In few cases, however, has it been demonstrated that feeding nestlings by helpers, rather than some other be
Externí odkaz:
https://doaj.org/article/4b2fe1b706fa44678e11a292ec519579
Publikováno v:
Check List, Vol 12, Iss 2, Pp 1-11 (2016)
A unique aspect of montane birds is the elevational stratification they show in their distribution, but in the Himalayas, a subset of the species show elevational migration, making bird communities on these mountains especially dynamic. Thus, underst
Externí odkaz:
https://doaj.org/article/0f8761888d0a4ee8b37851b8d9573a8f
Autor:
Sahas Barve, Frank A La Sorte
Publikováno v:
PLoS ONE, Vol 11, Iss 5, p e0154871 (2016)
Food availability is known to influence parental care and mating systems in passerine birds. Altricial chicks make uni-parental care particularly demanding for passerines and parental investment is known to increase with decreasing food availability.
Externí odkaz:
https://doaj.org/article/db1f5f2c1c7347d0a0fe6b623d5a465d
Autor:
Walter D. Koenig, Sahas Barve, Joseph Haydock, Hannah L. Dugdale, Madan K. Oli, Eric L. Walters
Publikováno v:
Proceedings of the National Academy of Sciences. 120
Although over 50 y have passed since W. D. Hamilton articulated kin selection and inclusive fitness as evolutionary explanations for altruistic behavior, quantifying inclusive fitness continues to be challenging. Here, using 30 y of data and two alte
Publikováno v:
Methods in Ecology and Evolution. 13:133-143
Publikováno v:
Ecography. 44:680-689