Barn swallows, infamous for their mud nests in doorways, are returning. Once they make a nest, you can't legally remove them.

Coots' nests in Amsterdam are built using discarded plastic, providing a time capsule into the material's use over the past ...

Plastic waste has let common coots reuse nests year after year. Scientists have now used the trash layers to date how old nests are.

“Unfortunately, barn swallows build their nest out of mud, and got the name ... preventative action early before the birds start nesting. “For instance, you can put up netting barriers,” says Coleman.

Photo from Chun-Fu Lin via Lin, Chang, Matsui, Shen, Tominaga and Lin (2025) In a wetland of central Taiwan, a “slender” creature poked its “triangular” head out of a mud nest and made an ...

These birds prefer nesting on overhangs, covered ledges or other suitable surfaces, using mud to build their nests. If your property meets these conditions, you may find swallows returning every ...

In a wetland of central Taiwan, a “slender” creature poked its “triangular” head out of a mud nest and made an “urgent”-sounding call. The call was intended to attract a mate — but ...