Results 81 to 90 of about 11,631 (283)

Sexually dichromatic hybrids between two monochromatic duck species, the Chiloé wigeon and the Philippine duck

open access: yesEcology and Evolution, 2021
Captive bird hybrids can provide important data on certain traits, such as hybrid viability and fertility. In this paper, we describe four hybrids between the Chiloé wigeon (Anas sibilatrix) and the Philippine duck (Anas luzonica).
Jente Ottenburghs, Jan Harteman
doaj   +1 more source

A Ground Surface Rolling Method for Detecting Environmental DNA of Terrestrial Animals

open access: yesEnvironmental DNA, Volume 8, Issue 1, January–February 2026.
The Koro‐rin sampler enables surface‐based eDNA detection of terrestrial animals. This approach captured a broad range of bird and mammal taxa, including small and cryptic species, and revealed seasonal patterns in animal presence, complementing conventional monitoring methods.
Manami Kakita   +2 more
wiley   +1 more source

Evolutionary Genetics of the Anatidae

open access: yesJapanese Journal of Ornithology, 1983
Thirty-one species and subspecies consisting of 169 individuals of the Anatidae were tested with 10 enzyme loci by means of electrophoresis. (1) Intra-specific genetic variation was found only in 6 species. The overall mean heterozygosity value was very low (H=0.003).(2) The mean genetic distance (D) was 0.285 among 13 genera, and 0.016 among 31 ...
Ken-ichi NUMACHI   +4 more
openaire   +2 more sources

The collection and database of Birds of Angola hosted at IICT (Instituto de Investigação Científica Tropical), Lisboa, Portugal [PDF]

open access: yes, 2014
The bird collection of the Instituto de Investigação Cientítica Tropical (Lisbon, Portugal) holds 5598 preserved specimens (skins), mainly from Angola, Mozambique, Guinea-Bissau, São Tomé and Principe, and Cape Verde.
Monteiro, Miguel   +9 more
core   +3 more sources

Presencia y abundancia de aves acuáticas en la Meseta Strobel, Patagonia, Argentina [PDF]

open access: yes, 2009
La meseta Strobel, ubicada en la estepa patagónica, alberga más de 1500 lagunas que son utilizadas regularmente por aves acuáticas, incluyendo una de las principales poblaciones reproductivas del Macá Tobiano (Podiceps gallardoi), una especie endémica de
Lancelotti, Julio Lucio   +4 more
core   +1 more source

What Do We Talk About When We Talk About Euroscepticism? Relaunching the Conceptual Debate About a Contested Term

open access: yesContemporary European Politics, Volume 3, Issue 4, December 2025.
ABSTRACT Euroscepticism has become a mainstream phenomenon in European politics since the concept's first appearance in The Times of 11 November 1985. The post‐Maastricht Treaty period was an important initial turning point, but Euroscepticism became especially visible during the crises that hit the European Union more recently.
Patrick Bijsmans, Luca Mancin
wiley   +1 more source

Experimental Evidence Shows the Importance of Behavioural Plasticity and Body Size under Competition in Waterfowl. [PDF]

open access: yesPLoS ONE, 2016
When differently sized species feed on the same resources, interference competition may occur, which may negatively affect their food intake rate. It is expected that competition between species also alters behaviour and feeding patch selection.
Yong Zhang   +5 more
doaj   +1 more source

National assessment of threatened species using sparse data: IUCN Red List classification of Anatidae in Iran [PDF]

open access: yes, 2016
Classifying the status of threatened species using tools such as the IUCN Red List is a critical step for identifying at-risk species, and for conservation planning at global and sub-global levels.
Collen, B   +3 more
core   +1 more source

Tracking habitat use of migratory birds in a human‐dominated stopover site using deep learning and acoustic indices

open access: yesEcosphere, Volume 16, Issue 12, December 2025.
Abstract Bird migration is a fascinating behavioral phenomenon on earth, with annual movements along migratory routes forming complex migration networks. Stopovers, which serve as fuel stations for migratory birds, are critical to the success of long‐distance migrations.
Yuxuan Duan   +5 more
wiley   +1 more source

Non‐Passerine Birds in Zoos: A Global Approach on Distribution Patterns of Threatened Birds in Zoological Institutions 动物园中非雀形目鸟类:全球动物机构中受威胁鸟类的分布模式研究

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 600-615, December 2025.
Only 1541 (34.2%) of 4503 recognized non‐passerine bird species are held in ZIMS institutions worldwide. Approximately ~83% of the species kept globally are classified as non‐threatened and ~16% as threatened. To improve the conservation of threatened birds, a shift toward keeping threatened species should be considered within ex situ management ...
Anna Wahle   +6 more
wiley   +1 more source

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