Bird Fact ALL About The Cup Nest’s

Cup nests are as they sound—little cups built to hold the eggs.

These nests are built by the birds
themselves, usually from a mixture of grass, mud, twigs, spider web and the bird’s own saliva.

Barn swallows in a cup nest
attached to the side of a house.

The Source:
Page #4 and #5
Ornithology #18
Life Cycle:
Nest’s