Results 11 to 20 of about 26,885 (179)

Wintering Together: Do Migrants Impact Residents? A Literature Review. [PDF]

Ecol Evol
This review examines the overlooked impacts of interspecific competition on resident tropical birds during the overwintering period, highlighting the need for a deeper understanding of their interactions with migratory species. By evaluating the literature through the lens of competition theory, we identify critical gaps in knowledge and suggest that ...
Navarro-Velez KC, Dhondt AA.
europepmc   +2 more sources

Local prior information and mainland overflow explain avian colonisation in a major land‐bridge island

Journal of Biogeography, Volume 50, Issue 9, Page 1615-1622, September 2023., 2023
Abstract Aim The relative roles of intrinsic and extrinsic factors, and those of local and regional variables, in island colonisation, remain major biogeographical questions. Thus, we analysed avian colonisation records of a large land‐bridge island, defining successful colonisation as the occurrence of breeding during at least 3 consecutive years, at ...
Alejandro Martínez‐Abraín, Jorge Crespo, Maties Rebassa   +2 more
wiley   +1 more source

CONTRIBUIÇÃO PARA O CONHECIMENTO DA DIETA DE CORUJAS (AVES: STRIGIFORMES) NO SUL DO BRASIL

Oecologia Australis, 2020
Nos analisamos as presas consumidas por quatro especies de corujas que ocorrem no estado do Rio Grande do Sul, Brasil. As amostras foram obtidas a partir da coleta de uma egagropila de A. clamator (N = 1) e 12 carcacas de Strigiformes atropelados ( Tyto furcata: N = 5; Megascops sp.: N = 4; Bubo virginianus : N = 2; Asio clamator : N = 1 ...
Renata Brentano, Luiz Liberato Costa Corrêa, Douglas Ribeiro da Silva, Maria Virginia Petry   +3 more
openaire   +2 more sources

Effects of forest fragmentation on avian breeding activity

Conservation Biology, Volume 37, Issue 4, August 2023., 2023
Abstract Biodiversity declines and ecosystem decay follow forest fragmentation; initially, abundant species may become rare or be extirpated. Underlying mechanisms behind delayed extirpation of certain species following forest fragmentation are unknown.
Charles P. J. Coddington, W. Justin Cooper, David A. Luther   +2 more
wiley   +1 more source

Enzimas exógenas em dietas contendo farelo de trigo e outros alimentos alternativos para aves: revisão [PDF]

Pubvet, 2008
A nutrição de aves é uma ciência dinâmica de grande importância para a produção animal. Isto faz com que sempre haja assuntos atuais que carecem ainda de estudos mais refinados, constituindo-se em vasto campo de trabalho para os cientistas da área.
Daniel de Magalhães Araujo, José Humberto Vilar da Silva   +1 more
openaire   +1 more source

Seasonality in niche occupation revealed through bird community functional structure in the southern Atlantic rainforest

Ibis, Volume 165, Issue 3, Page 986-997, July 2023., 2023
Seasonal variation in tropical and subtropical systems can have different effects on bird species depending on the resources they use and how they use them. However, despite recent research advances, knowledge of the drivers of the presence and abundance of species in different seasons is still limited for most tropical bird species.
Bia A. Almeida, Gabriela M. Bochio, Larissa C. Calsavara, Fernanda C. Marques, Luiz dos Anjos   +4 more
wiley   +1 more source

Feno da folha de leucena na alimentação de poedeiras comerciais de 32 a 44 semanas

Semina: Ciências Agrárias, 2023
O objetivo do estudo foi avaliar o efeito da inclusão do feno da folha de leucena em dietas sobre a metabolização de nutrientes, desempenho e características dos ovos de poedeiras comerciais.
Francislene Sucupira, Ednardo Rodrigues Freitas, Rafael Carlos Nepomuceno, Pedro Henrique Watanabe, Germano Augusto Jerônimo do Nascimento, Nádia de Melo Braz, Raffaella Castro Lima   +6 more
doaj   +1 more source

Bird species occupancy trends in Southeast Mexico over 1900–2020: Accounting for sighting record absences

Journal of Animal Ecology, Volume 92, Issue 3, Page 606-618, March 2023., 2023
This article accounts for species absences before occupancy analyses, addressing a long‐standing concern of whether absence is true or due to low sampling effort. The authors affiliate long‐term bird species trends with functional traits in a lowland tropical rainforest landscape in southeast Mexico to help guide land management and conservation ...
Dallas R. Levey, Michael A. Patten, Alejandro Estrada   +2 more
wiley   +1 more source

Avaliação do Metabolismo Nutricional em Poedeiras pela Técnica dos Isótopos Estáveis do Ccarbono (13C/12C)

Brazilian Journal of Poultry Science, 2000
Os isótopos estáveis do carbono que eram utilizados em estudos ecológicos e paleoecológicos apresentaram um incremento nos últimos trinta anos, na utilização em estudos dietéticos em animais.
AS Carrijo, AC Pezzato, C Ducatti
doaj   +1 more source

The effect of flight efficiency on gap‐crossing ability in Amazonian forest birds

Biotropica, Volume 54, Issue 4, Page 860-868, July 2022., 2022
We determined the role of flight efficiency on the likelihood of crossing a road that bisected an Amazonian forest. We found that flight efficiency was a strong predictor of road‐crossing probability: species with high hand‐wing indices (more elongated wings) crossed the road more frequently than those with low hand‐wing indices.
Santiago Claramunt, Milly Hong, Adriana Bravo   +2 more
wiley   +1 more source