In actual fact, of course, birds will choose for themselves the most
suitable materials for making their nest. They often choose natural from
materials such as leaves, twigs, grass, hair, fur and feathers, as well as
string or thread made from natural materials. But then some will choose
stuff
As I recall, when this first came up for discussion (not necessarily on
this list...), the issue was not about moisture, but about color. When
orts of brightly colored fibers were put out for the birds, and then put
in nests, the bright colors attracted more predators. I think the major
