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Hace 18 horas · RESUMEN. Los niveles crecientes de cambio ambiental global pueden tener impactos negativos en la fertilidad y viabilidad embrionaria de los animales que podrían explicar el aumento recientemente reportado del fracaso en la eclosión de los huevos de las aves en todo el mundo.
Hace 18 horas · Abstract. The emergence of continental to global scale biodiversity data has led to growing understanding of patterns in species distributions, and the determinants of these distributions, at large spatial scales. However, identifying the specific mechanisms, including demographic processes, determining species distributions remains difficult ...
Hace 18 horas · Breeding success of birds depends on survival during two critical stages of the reproductive period: First, egg laying and incubation, and then nestling and fledgling. This essential element of avian life history mirrors an evolutionary adaptation of parents to existing environmental conditions. The main factors that determine nest survival involve weather, predation and sibling competition ...
Hace 5 días · El monitoreo acústico pasivo (PAM, por sus siglas en inglés) se ha convertido en una herramienta relevante para el estudio de aves, y existe una creciente demanda de diferentes enfoques para obtener información sobre abundancia y comportamiento a partir de grabaciones por medio del PAM.
Hace 1 día · Ornis Svecica is an open access, peer-reviewed scientific journal published in English and Swedish by BirdLife Sweden. It covers all aspects of ornithology, and welcomes contributions from scientists as well as non-professional ornithologists. Accepted articles are published at no charge to the authors. ISSN: 2003-2633 (online), 1102-6812 (print)
Hace 2 días · Supporting Arch 225 and Arch 293. Comprehensive life histories for all bird species and families. Coverage: Created by the Cornell Lab of Ornithology, Birds of the World (BOW) content was amassed from four major works: _Birds of North America, The Handbook of Birds of the World, Neotropical Birds,_ and_ _ Bird Families of the World.
Hace 18 horas · A recent study, published in IBIS , investigated the relationships between eggshell maculation, social breeding behaviour and nest type in the family Hirundinidae (swallows and martins) to test for correlated evolution between these traits. Maculation, as seen on these Swallow eggs, was found to be commoner among open-nesting hirundines (Kati ...
