Results 131 to 140 of about 11,480 (247)

Post-Fledging Ecology of Great Horned Owls in South Central Saskatchewan

open access: yes, 1998
In 1993 and 1994 I studied 26 fledgling great horned owls (Bubo virginianus) from 23 nests in south central Saskatchewan to quantify their post-fledging habits.
Danilson, Christopher D.
core  

Seasonal variation in preen gland secretions of Tristram's Storm Petrel (Hydrobates tristrami)

open access: yesIbis, EarlyView.
Preen gland secretions are known to vary depending on sex, season and species and are thought to play essential roles in avian life history. However, their chemical composition and functions remain largely unclear in Procellariiform seabirds with well‐developed olfactory senses. Storm petrels, known for their distinctive body odour, may use preen gland
Taiki Terajima   +2 more
wiley   +1 more source

Successful bald eagle nesting and fledging on lower Yakima River, Washington

open access: yes, 2001
Successful bald eagle nesting and fledging on lower Yakima River, WashingtonLivingston and Hames "Successful bald eagle nesting and fledging on lower Yakima River, Washington." Northwest Science.
Hames, T. R., Livingston, M. F.
core  

A global perspective on the annual cycles of whimbrels

open access: yesIbis, EarlyView.
Comparative analyses are central to understanding broad‐scale patterns in avian ecology, yet their application is often constrained by fragmented and uneven data availability. Recent advances in tracking technology have generated unprecedented insights into shorebird movements, resulting in numerous studies on single populations or flyways.
Camilo Carneiro   +53 more
wiley   +1 more source

Not all crickets are equal: selective shrike predation highlights the conservation value of diverse arthropod communities to grassland birds

open access: yesIbis, EarlyView.
Understanding dietary preferences and prey selection is pivotal for interpreting the ecology and conservation needs of threatened species. We investigated the diet composition and prey selection of the Red‐backed Shrike Lanius collurio in a montane grassland of the central Italian Apennines, with special regard to sex‐related differences and the ...
Leonardo Ancillotto   +8 more
wiley   +1 more source

Population dynamics and reproductive success of Short‐eared Owls in relation to widely fluctuating food abundance and farmland habitat degradation

open access: yesIbis, EarlyView.
Populations of the Short‐eared Owl Asio flammeus have declined across Europe and North America, probably in response to habitat degradation driven by agricultural intensification. However, long‐term evidence linking farmland habitat change to variation in breeding density and reproductive success remains limited.
Erkki Korpimäki   +2 more
wiley   +1 more source

A longitudinal study of avian pox in a small passerine, the Dunnock (Prunella modularis)

open access: yesIbis, EarlyView.
Long‐term, longitudinal studies of disease in wild bird populations are rare. Diseases are important determinants of bird survival and may spill‐over into other species including livestock and, in some cases, humans. Avian pox is a globally distributed disease, resulting from infection by viruses in the genus Avipoxvirus (APV).
Denise C. Wawman   +5 more
wiley   +1 more source

Persecution by humans affects nest‐site selection of Hooded Crows: a comparison of an urban and two rural areas

open access: yesIbis, EarlyView.
The Hooded Crow, a bird species that once occurred only in agricultural areas, has colonized urban environments in the last 50–100 years in Europe. Apart from higher food availability, safer nesting sites, better thermoregulation and lower predation in cities, persecution through hunting, trapping or poisoning by humans in rural areas is an important ...
Petra Paládi   +5 more
wiley   +1 more source

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