Cliff swallows are said by ornithologists to show the highest degree of colonization of any of the 89 swallow species in the world. Colonies can number from 200 to more than 2,000 nests. They could be ...

A male and female Baltimore oriole feed their young while perched on their hanging nest, which is made of materials like thin twigs, plant cotton and bark strips. Spring is in the air — which means ...

Neighboring groups of birds within the same species can create very different-looking nests — showing that their nest-building choices aren't solely controlled by instinct and the environment. Instead ...

Nature lovers can livestream two pairs of rare birds as they build their nests and rear their chicks in Co. Cork this spring. Members of the public can now tune in again this year to ‘Nestflix’, two ...

A white-browed sparrow weaver inspects a roost under construction, after just receiving some grass brought by another member of its group. (Maria Cristina Tello-Ramos) Neighboring groups of birds ...

Nest-building isn't just instinct. Birds can learn from others, letting groups within one species develop their own distinctive nest-building... When birds build nests, they're also building a culture ...