Results 91 to 100 of about 67,577 (337)

Drone‐based radiotelemetry and imagery systems provide an advantage over traditional techniques for estimating survival of dependent juveniles

open access: yesWildlife Society Bulletin, EarlyView.
We used drone‐based radiotelemetry and multispectral imagery to estimate detection and survival probabilities of blue‐winged teal broods in Saskatchewan, Canada. Weekly brood survival probabilities, estimated via Cormack‐Jolly‐Seber models, increased with age and were comparable between drone methods.
Grant A. Rhodes   +5 more
wiley   +1 more source

Events

open access: yesПернатые хищники и их охрана
The IInd Asian Ornithological Conference (AOC) “The new era of Asian ornithology” was held in Beijing, China, from 14 to 17 November 2024. The international workshop "Flyway Guardians" will be held in 17–23/03/2025 in Israel.
Igor V. Karyakin, Elvira G. Nikolenko
doaj  

GENERAL DESCRIPTION OF AUTUMN MIGRATION & ATTACHMENT TO THE NESTING PLACE OF PASSERIFORMES PASSERINE BIRDS IN THE MIDDLE REACHES OF THE TOM RIVER

open access: yesВестник Кемеровского государственного университета, 2014
The paper examines the general characteristics of autumn passerine migration in the middle reaches of the Tom valley. The data on mass migration periods is provided for the most numerous species. The ratio of ringed birds returns is assessed.
A. V. Kovalevskiy   +3 more
doaj  

Evidence of historical pairing between two cryptic species of Short-tailed Albatross

open access: yesAvian Conservation and Ecology, 2023
When secondary contact occurs between allopatric sister species, several evolutionary consequences are expected, such as reinforcement of reproductive isolation, hybrid speciation, de-speciation, introgressive hybridization, or formation of a stable ...
Masaki Eda   +5 more
doaj  

Cambios estacionales en los ensambles de aves en un ecotono bosque-estepa del norte de Patagonia [PDF]

open access: yes, 2018
Estudiamos las variaciones estacionales en una comunidad de aves que habitan el ecotono bosque-estepa del norte de Patagonia. Analizamos los cambios en la riqueza de especies, la composición de especies y la abundancia total, y a nivel de las especies ...
Cueto, Víctor   +1 more
core  

A new female-like morph of juvenile male Levant Sparrowhawk (Accipiter brevipes) – Sexual mimicry to avoid intra-specific predation? [PDF]

open access: yes, 2015
In migrant Levant Sparrowhawk (Accipiter brevipes) at Eilat, Israel, we noted that juvenile males had two different morphs – the one described to date in literature; and a second, previously undescribed morph, with femalelike barring on the ...
Fornasari, Lorenzo, Yosef, Reuven
core   +3 more sources

Spatiotemporal mapping the usable space of free‐roaming equids across the western United States

open access: yesWildlife Society Bulletin, EarlyView.
Identification of the inter‐decadal (2010‐2011) enhancement‐degradation gradients in the usable space for wild equid Herd Management Areas in the Great Basin, USA. Abstract Management of feral equids in the American West is hindered by the lack of a formal habitat map and monitoring system.
Alexander Hernandez   +3 more
wiley   +1 more source

J.S.P. Ramsay: amateur ornithological photography and the photo processing industry [PDF]

open access: yes
J.S.P. Ramsay (b. 1884, d. 1981) was a Sydney‐based businessman running Ramsay Photo Works, a successful photo processing business that operated for several decades from 1925. Ramsay was the son of E.P.
Peck, Julia
core  

Lures do not increase box‐trapping success of an endangered felid in South Texas

open access: yesWildlife Society Bulletin, EarlyView.
We used a randomized design and linear regression to assess whether visual (compact disc [CD] and ribbon), and olfactory (musk and ocelot urine) lures would increase capture success of three mesocarnivores (ocelots [Leopardus pardalis], bobcats [Lynx rufus], and coyotes [Canis latrans]) with box traps baited with a live bird from December 2023 to April
Ashley M. Reeves   +7 more
wiley   +1 more source

Ecological and geographical overlap drive plumage evolution and mimicry in woodpeckers

open access: yesNature Communications, 2019
Many abiotic and biotic factors shape the macroevolution of phenotype, but these factors are rarely disentangled across large radiations. Here, Miller et al. investigate plumage evolution across woodpeckers, finding influences of habitat and climate, but
Eliot T. Miller   +4 more
doaj   +1 more source

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