Results 61 to 70 of about 36,396 (177)

Изменчивость кречета и балобана по морфологическими генетическим признакам

Пернатые хищники и их охрана, 2018
Три вида соко лов: балобан (Falco cherrug), кречет (F. rusticolus) и сапсан (F. peregrinus) оказались наиболее подверженными воздействию со стороны человека.
Alexandra Nechaeva, Mariana Belokon, Yury Belokon, Eugene Sarychev, Irina Beme   +4 more
doaj  

Keystone effects of prairie dogs (Cynomys spp.) on grassland birds: Current knowledge and future directions

Conservation Science and Practice, Volume 7, Issue 4, April 2025.
This article reviews the literature on how prairie dogs as keystone species affect grassland birds, an imperiled avian community. We tested hypotheses and synthesized conclusions from the literature, and then we identified key knowledge gaps to be filled with future work.
R. Andrew Dreelin, Andy J. Boyce, Holly P. Jones   +2 more
wiley   +1 more source

Pre-extraction drying alters fecal testosterone measurements and variability in male Gyrfalcons (Falco rusticolus)

Theriogenology Wild
Non-invasive endocrine monitoring is an important tool in captive breeding programs for birds, however, hormone measurements from fecal samples remain sensitive to methodological decisions.
Caroline Silva Vieira, Hiba Abi Hussein, Leticia Zoccolaro Oliveira, Yves Hingrat, Gwènaêlle Levêque, Mohamed Abdessamad, Janaina Torres Carreira   +6 more
doaj   +1 more source

A Helicopter Survey for Cliff-Nesting Raptors Along the Dalton Highway in Northern Alaska, 2010

Birds
We conducted a helicopter survey in 2010 for cliff-nesting raptors along the Dalton Highway in northern Alaska. The study area extended from the Yukon River northward ~395 km through the Brooks Range to the Arctic Plain.
Erica H. Craig, Jim D. Herriges, Tim H. Craig   +2 more
doaj   +1 more source

First record of gyrfalcon Falco rusticolus in Korea

, 2010
On 20 March 2010, One Gyrfalcon (Falco rusticolus) was observed at Nakdong river, Sangju city, Gyeongsangbukdo province (E128° 14′ 25.6″ N36° 25′ 05.0″), and this is the first record of this species for the Korean peninsula. The Gyrfalcon has distributed
I H Paik, C Y Park, W K Paik, S D Jin, W H Hur, J P Yu, S H Kim, Jeong Ran Han, H J Kim, J H Kim   +9 more
core  

\u3ci\u3eBirds of the Rocky Mountains\u3c/i\u3e—Species Accounts, pages 110-129: Vultures, Hawks & Eagles [PDF]

, 2009
Turkey Vulture (Cathartes aura) Osprey (Pandion haliaetus) Bald Eagle (Haliaeetus leucocephalus) Northern Harrier (Circus cyaneus) Sharp-shinned Hawk (Accipiter striatus) Cooper\u27s Hawk (Accipiter velox) Northern Goshawk (Accipiter gentilis) Red-
Johnsgard, Paul A.
core  

Analisi del seme e valutazione morfometrica degli spermatozoi di falco ibrido (Falco rusticolus x Falco cherrug) e Falco pellegrino (Falco peregrinus). Studio preliminare.

, 2019
L’inseminazione artificiale e la crioconservazione giocano un ruolo importante nella propagazione di specie di uccelli minacciate. Ma lo sviluppo di tali tecniche sui rapaci prevede prima un’attenta valutazione delle caratteristiche spermatiche, che ...
Govoni, Miranda
core  

First Record of Nestling Relocation by Adult Gyrfalcons (\u3cem\u3eFalco rusticolus\u3c/em\u3e) Following Nest Collapse [PDF]

, 2017
Nest collapse has been documented in many bird species, with little discussion of adult behavior following collapse. We present evidence of a partial collapse of a Gyrfalcon (Falco rusticolus) nest during the nestling period and the subsequent adult ...
Robinson, Bryce W., Bechard, Marc J., Marc J. Bechard, Neil Paprocki, Anderson, David L., David L. Anderson, Paprocki, Neil, Bryce W. Robinson   +7 more
core   +1 more source

Gyrfalcon Falco rusticolus post-glacial colonization and extreme long-term use of nest-sites in Greenland

, 2009
Gyrfalcons Falco rusticolus use the same nest-sites over long periods of time, and in the cold dry climate of Greenland, guano and other nest debris decay slowly.
Burnham, Kurt K., Newton, Ian, Burnham, William A.   +2 more
core   +1 more source

Beneath the Feathers: Hidden Burden of Serratospiculum and Other Endoparasites in Falcons Raised in Captivity in Serbia

Birds
Parasitic infections represent an important health challenge in falcons (Falconidae), where they may negatively influence survival, reproduction, and performance.
Dajana Davitkov, Tamara Ilic, Milan Vidakovic, Sofija Solaja, Vladimir Nesic, Nemanja M. Jovanovic   +5 more
doaj   +1 more source