Results 1 to 10 of about 124 (74)

Genomics Reveal Population Structure and Intergeneric Hybridization in an Endangered South American Bird: Implications for Management and Conservation [PDF]

open access: yesEcology and Evolution
Genomics is an invaluable tool for conservation, particularly for endangered species impacted by wildlife trafficking. This study uses genomic data to provide new insights to aid conservation and management of endangered species, using as a case study ...
Camila Mazzoni   +2 more
exaly   +4 more sources

Vulnerability of Gubernatrix cristata to climate change, anthropogenic pressures, and hybridization threats [PDF]

open access: yesScientific Reports
Estimating extinction risk is challenging due to insufficient data on current and future threats. This study develops a framework incorporating the impacts of climate change, anthropogenic pressures, and biotic interactions for assessing extinction risks
Marisol Dominguez   +1 more
exaly   +3 more sources

Geographic variation in the altitudinal migration patterns, body size, oxidative status and exploratory behavior in a neotropical bird. [PDF]

open access: yesEcol Evol, 2023
Individuals of the same species can substantially vary their altitudinal migration pattern and phenotype according to local weather conditions. Here, we evaluate latitudinal variation in altitudinal migration patterns and its possible links with body size, oxidative status, and exploratory behavior in a neotropical bird.
Poblete Y   +6 more
europepmc   +2 more sources

Combining point counts and autonomous recording units improves avian survey efficacy across elevational gradients on two continents. [PDF]

open access: yesEcol Evol, 2021
Using avian surveys conducted in comparable, high elevation, temperate mountain habitats at opposite ends of the Americas (British Columbia, Canada, and southern Chile), we show combined ARU and point count methods are among the most efficient and accurate approaches to capturing diversity.
Drake A   +7 more
europepmc   +2 more sources

Conformity to Bergmann's rule in birds depends on nest design and migration. [PDF]

open access: yesEcol Evol, 2021
Bergmann's rule has received mixed support from empirical studies and here, we examined if behavior may moderate its effect. We show that amongst European birds, conformity to Bergmann's rule depends on migratory behavior and the design of nests. Abstract Ecogeographical rules attempt to explain large‐scale spatial patterns in biological traits. One of
Mainwaring MC, Street SE.
europepmc   +2 more sources

Plausible causes of seed preferences and diet composition in seed‐eating passerines

open access: yesJournal of Avian Biology, Volume 2022, Issue 3, March 2022., 2022
We evaluated whether seed mass, handling time, handling efficiency and profitability account for (a) preferences in controlled experiments and (b) field‐diet composition of four bird species of the Monte desert, Argentina. The question of whether birds maximise their energy intake rates while feeding on seeds is assessed.
Luis Marone   +4 more
wiley   +1 more source

Glacier influence on bird assemblages in habitat islands of the high Bolivian Andes

open access: yesDiversity and Distributions, Volume 28, Issue 2, Page 242-256, February 2022., 2022
Abstract Aim Climate projections for the upcoming decades predict a significant loss of ice mass particularly critical for glaciers in tropical mountains. In the dry landscapes of the southern Andes (from Southern Peru to Chile), this global trend has strong ecological impacts on high‐altitude wetlands that support a unique avifauna for feeding ...
Tatiana Cardenas   +9 more
wiley   +1 more source

La reproducción de cinco especies de Emberizidae y Fringillidae en la Reserva de Ñacuñán, Argentina

open access: yesEl Hornero, 2003
En este estudio se describe la nidificación de cinco especies de Emberizidae y Fringillidae en la Reserva de Ñacuñán, situada en el desierto del Monte central.
Eduardo T. Mezquida
doaj   +1 more source

Hibridación entre Cardenal Amarillo (Gubernatrix cristata) y Diuca Común (Diuca diuca minor) en estado silvestre, en la Argentina

open access: yesEl Hornero, 1997
Se describen dos híbridos intergenéricos entre Cardenal Amarillo (Gubernatrix cristata) y Diuca Común (Diuca diuca minor) capturados en un área de simpatría, al este de la Provincia de Río Negro (República Argentina), donde estos híbridos son conocidos ...
Claudio Bertonatti, Anibal Lopez Guerra
doaj   +1 more source

Registro de un híbrido entre Cardenal Amarillo (Gubernatrix cristata) y Diuca Común (Diuca diuca) en el norte de la provincia de La Pampa, Argentina

open access: yesNuestras Aves, 2002
Este artículo no cuenta con un resumen.
Marcelo E. M. Pessino   +3 more
doaj   +1 more source

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