Results 41 to 50 of about 1,210,242 (209)

Survival rates of captive-bred Asian Houbara Chlamydotis macqueenii in a hunted migratory population [PDF]

, 2016
Asian Houbara Chlamydotis macqueenii numbers are declining owing to unsustainable levels of hunting and poaching, with the main conservation response being population reinforcement through the release of captive-bred birds.
Burnside, Robert, Collar, Nigel, Dolman, Paul, Scotland, Keith   +3 more
core   +1 more source

Influence of Habitat and Food Resource Availability on Common Raven Nest Site Selection and Reproductive Success in Mediterranean Forests

Birds, 2021
Bird nest selection in forests can be influenced by the composition of key structural elements and resources. This has important consequences in terms of species population dynamics since it can determine reproduction success.
Amalia Segura, Pelayo Acevedo
doaj   +1 more source

Heads Above the Grass [PDF]

, 2002
Today it is imperative that we acknowledge the brutality, intolerance and biased actions of the past. Thus by lifting our heads above the tall grass we can move forward to personal affirmation and progress.
Heap of Birds, Edgar
core   +1 more source

Integrating wetland bird point count data from humans and acoustic recorders

Avian Conservation and Ecology, 2020
Wetland loss is cause for concern for populations of many wetland bird species throughout North America. The North American Breeding Bird Survey, the primary resource for broad-scale avian population data, does not provide sufficient data for many marsh ...
Laura N. Stewart, Douglas C. Tozer, Janine M. McManus, Lucas E. Berrigan, Kiel L. Drake   +4 more
doaj  

Non-Invasive Monitoring of the Spatio-Temporal Dynamics of Vocalizations among Songbirds in a Semi Free-Flight Environment Using Robot Audition Techniques

Birds, 2021
To understand the social interactions among songbirds, extracting the timing, position, and acoustic properties of their vocalizations is essential. We propose a framework for automatic and fine-scale extraction of spatial-spectral-temporal patterns of ...
Shinji Sumitani, Reiji Suzuki, Takaya Arita, Kazuhiro Nakadai, Hiroshi G. Okuno   +4 more
doaj   +1 more source

Environmental factors influencing the spread of the highly pathogenic avian influenza H5N1 virus in wild birds in Europe [PDF]

, 2010
A large number of occurrences of the highly pathogenic avian influenza (HPAI) H5N1 virus in wild birds were reported in Europe. The relationship between the occurrence pattern and environmental factors has, however, not yet been explored.
Boer, W.F., de, Li, L., Prins, H.H.T., Si, Y., Skidmore, A.K., Wang, T.   +5 more
core   +2 more sources

Serological evidence for Japanese encephalitis and West Nile virus infections in domestic birds in Cambodia [PDF]

, 2020
Mosquito-borne flaviviruses with an enzootic transmission cycle like Japanese encephalitis virus (JEV) and West Nile virus (WNV) are a major public health concern.
Auerswald, Heidi, Cappelle, Julien, Chevalier, Véronique, Duong, Veasna, Dussart, Philippe, In, Saraden, Ladreyt, Héléna, Mao, Sokthearom, Ruget, Anne-Sophie, Sorn, San, Tum, Sothyra   +10 more
core   +3 more sources

Disentangling Post-Fire Logging and High-Severity Fire Effects for Spotted Owls

Birds, 2021
The Spotted Owl is a rare and declining raptor inhabiting low/middle-elevation forests of the Pacific Northwest, California, and the Southwest in the USA.
Chad T. Hanson, Derek E. Lee, Monica L. Bond   +2 more
doaj   +1 more source

Activity Patterns, Sex Ratio, and Social Organization of the Bare-Faced Curassow (Crax fasciolata) in the Northern Pantanal, Brazil

Birds, 2023
Among Neotropical cracids (Galliformes), many taxa are declining rapidly in population size and facing local extinction. However, in the Brazilian Pantanal, several species occur sympatrically and in abundant numbers to allow for long-term studies ...
Martin Senič, Karl-L. Schuchmann, Kathrin Burs, Ana Silvia Tissiani, Filipe de Deus, Marinez I. Marques   +5 more
doaj   +1 more source

Moving I`iwi (Vestiaria coccinea) as a Surrogate for Future Translocations of Endangered `Akohekohe (Palmeria dolei) [PDF]

, 2010
Translocations often play an important role in the recovery of endangered species. To assess feasibility for translocation of endangered `Akohekohe (Palmeria dolei), we conducted an experimental translocation of I`iwi (Vestiaria coccinea) from east to ...
Becker, Dusti, Groombridge, Jim J., Hammond, Ruby L., Massey, Greg   +3 more
core   +1 more source