Results 41 to 50 of about 38,928 (270)

Simple sequence repeats in zebra finch (Taeniopygia guttata) expressed sequence tags: a new resource for evolutionary genetic studies of passerines [PDF]

, 2007
Background Passerines (perching birds) are widely studied across many biological disciplines including ecology, population biology, neurobiology, behavioural ecology and evolutionary biology.
Birkhead, T.R., Hale, M.C., Slate, J.
core   +2 more sources

Biomass, abundances, and abundance and geographical range size relationship of birds along a rainforest elevational gradient in Papua New Guinea [PDF]

PeerJ, 2020
The usually positive inter-specific relationship between geographical range size and the abundance of local bird populations comes with exceptions. On continents, the majority of these exceptions have been described from tropical montane areas in Africa,
Katerina Sam, Bonny Koane
doaj   +2 more sources

Sperm competition and sperm midpiece size: no consistent pattern in passerine birds [PDF]

, 2007
Sperm competition is thought to be a major force driving the evolution of sperm shape and function. However, previous studies investigating the relationship between the risk of sperm competition and sperm morphometry revealed inconclusive results and ...
Birkhead T.R, Katz D.F, McFarlane R.W, Retzius G   +3 more
core   +2 more sources

Studying interspecific population synchrony: current status and future perspectives

Ecography, EarlyView.
Interspecific population synchrony, or co‐fluctuations in the population dynamics and demographic parameters of different species, is an important ecological phenomenon with major implications for the stability of communities and ecosystems. It is also central in the context of biodiversity loss, as interspecific synchrony can influence how ecological ...
Ragnhild Bjørkås, Ivar Herfindal, Marlène Gamelon, Aline Magdalena Lee   +3 more
wiley   +1 more source

Colours of urban selection: carotenoid‐based signals reveal divergent urban/rural evolutionary trajectories in two closely related passerines

Oikos, EarlyView.
Urbanisation is a major driver of environmental change, reshaping ecological and evolutionary processes. Urban‐driven phenotypic differences are increasingly documented, but the underlying role of selection is still understudied. One pattern is the consistent reduction of carotenoid‐based plumage pigmentation in city birds.
Nicolas Bekka, Simon Agostini, Samuel Perret, Clotilde Biard   +3 more
wiley   +1 more source

Aromatic plants, nest bacterial diversity, and nestling condition in Corsican blue tits

Oikos, EarlyView.
According to the ‘nest protection hypothesis', some passerines incorporate fresh aromatic plants into their nests which reduce pathogens that can negatively affect nestlings. We experimentally evaluated the effect of five aromatic plant species on the nest bacterial microbiota of Corsican blue tits Cyanistes caeruleus.
Hélène Dion‐Phénix, Gabrielle Gingras, Claire Doutrelant, Anne Charmantier, Steven W. Kembel, Denis Réale   +5 more
wiley   +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, Paulo H. A. Camargo, Ana C. Crestani, Tobias N. Rojas   +3 more
wiley   +1 more source

Characterization of Worm-eating Warbler (Helmitheros vermivorum) breeding habitat at the landscape level and nest scale

Avian Conservation and Ecology, 2018
The Worm-eating Warbler (Helmitheros vermivorum) is typically described as a mature forest species requiring moderate to steep slopes and dense understory vegetation for breeding. However, nesting microhabitat characteristics vary regionally.
Patrick J. Ruhl, Kenneth F. Kellner, Jameson M. Pierce, Jeffrey K. Riegel, Robert K. Swihart, Mike R. Saunders, John B. Dunning, Jr.   +6 more
doaj   +1 more source

Avian Song Complexity is Associated With High Field Metabolic Rate [PDF]

, 2006
Question: Is the production of bird song costly? Analyses of oxygen consumption during singing provided conflicting results. Data studied: Data on 28 passerine species with quantitative information on song complexity and field metabolic rate, which ...
Garamszegi, László Zsolt, Moller, Anders Pape, Moreno, Juan   +2 more
core  

Avian Malaria Among House Sparrows: a Survey of Disease and Mosquito Vectors (Diptera: Culicidae) in Reed City, Michigan [PDF]

, 2017
Nine of 350 house sparrows caught in Reed City, Michigan, had malaria parasites detectable on Giemsa-stained thin films. All of the infected birds were juveniles, Parasitemias were too low to permit identification of the Plasmodium present. Collection of
Freier, Jerome E, Gogolin, Luanne R
core   +3 more sources