Emergence and transmission of infectious diseases have an enormous impact on the poultry industry and present a serious threat to the health of humans and wild birds. Noncommercial poultry operations, such as backyard poultry facilities in China, are potential sources of virus exchange between commercial poultry and wild birds. It is particularly critical in wetland areas where backyard poultry...

Some birds of prey from the Upper Pliocene of Kansas.---Although many arian fossils from the local faunas of the Rexroad formation (Upper Pliocene), Meade County, Kansas, have now been reported, several species of birds of prey remain. These fossils, which Dr. C. W. Hibbard of The University of Michigan Museum of Paleontology a.nd his field parties collected, come from the Rexroad and Fox Canyo...

A study was conducted at a native chicken cum pig farm in Kanyakumari District, Tamil Nadu, India, to evaluate its economic feasibility. The unit yields regular income the farmer, where adult chickens, eggs, and day-old chicks are sold local households on demand basis premium prize. poultry operates yearly benefit-cost ratio (BCR) of 3.92, which is attributed scavenging nature birds, thereby re...

The avian magnetic compass, probably based on radical pair processes, works only in a narrow functional window around the local field strength, with cryptochrome 1a as most likely receptor molecule. Radio-frequency fields in the MHz range have been shown to disrupt the birds' orientation, yet the nature of this interference is still unclear. In an immuno-histological study, we tested whether th...

Chimney swifts (Chaetura pelagica) are highly manoeuvrable birds notable for roosting overnight in chimneys, in groups of hundreds or thousands of birds, before and during their autumn migration. At dusk, birds gather in large numbers from surrounding areas near a roost site. The whole flock then employs an orderly, but dynamic, circling approach pattern before rapidly entering a small aperture...

The function of the brain activity that defines slow wave sleep (SWS) and rapid eye movement (REM) sleep in mammals is unknown. During SWS, the level of electroencephalogram slow wave activity (SWA or 0.5-4.5 Hz power density) increases and decreases as a function of prior time spent awake and asleep, respectively. Such dynamics occur in response to waking brain use, as SWA increases locally in...

Migratory birds play important roles as distributors of ticks within and between continents. In the Old World, the most important migratory route of birds links Asia, Europe and Africa. During their migration, birds use various stopover sites, where they feed and rest and where ticks may attach or detach, creating new natural foci for vector-borne diseases. Danube Delta is one of the most impor...

Perhutani area in Poncokusumo is inhabited by endemic and protected mammals birds. However the data of species are still lacking while wildlife threatened forest conversion hunting activities. Â This study aims to determine bird conservation strategies through watching ecotourism based on community. The objectives survey birds Poncokusumo, analyze perception knowledge community visitors toward ...

Montane habitats are characterized by predictably rapid heterogeneity along elevational gradients and are useful for investigating the consequences of environmental heterogeneity for local adaptation and population genetic structure. Food-caching mountain chickadees inhabit a continuous elevation gradient in the Sierra Nevada, and birds living at harsher, high elevations have better spatial mem...

Department of Animal Science, Faculty of Agriculture, University of Benin, Benin City, Edo State, Nigeria. E-mail: [email protected] Twenty strains of local laying birds of the Dominant Black (DBK), Frizzle Birds (FB), Naked-Neck (NK) and Normal feathers Birds (NB) each were used to access the breed influence of local chicken on plasma lipid and egg lipid profiles in layers. The experimen...