Sentence examples for birds is often from inspiring English sources

Although it is not technically black it's a very, very dark red the sacred blood of the birds is often spilled in sacrificial rituals.

Although taking small blood samples from wild birds is often viewed as a harmless alternative to collecting, it reduces survival by as much as 33% and does not provide the benefits of a voucher specimen.

Sexual dichromatism in birds is often thought to be linked to sexual selection intensity [41], [42].

The target catch includes pelagic species like tunas, sharks and billfishes, and benthic species like toothfishes, halibut, and sablefish, but bycatch of unwanted fish, sea turtles and birds is often high.

Candidiasis in birds is often associated with stress and poor husbandry [ 10, 11, 22], as is the case reported here.

Recombination is often not evenly distributed within chromosomes and in birds is often more pronounced near the telomeres.

These dynamic birds are often seen hanging on twigs or pecking at small branches.

Birds are often seen perched in relatively open areas in groups of 4-6 individuals.

Birds are often used as indicators of such impacts of landscape change on ecosystems.

But birds are often seen in areas where they don't normally go.

Feral birds are often very difficult to distinguish from free-ranging domestics and frequently both inhabit the same island, though feral birds are often secretive and difficult to see.