During most of the summer, HWA aestivate on the needles (basically a long sleep). Once temperatures begin to fall, they develop a white woolly egg mass. This generation is fully developed in the ...

The black patch on the its head (offset by its woolly white neck) resembling the skull cap -- zucchheto -- worn by Catholic clergymen is the reason. The bird is also loosely called episcopus.

It is an invasive insect which can often be recognized by tiny balls of white woolly material lining hemlock branches. Hemlock woolly adelgid poses a significant threat to Eastern Hemlock trees in ...

The researchers compare the woolly rhinoceros’s suspected fat hump to the white rhinoceros’s nuchal lump, proposing that it ...