With careful observation, you can identify bird eggs by color and size ... “I discovered this robins nest (above) in my front yard birch tree. Using my iPhone, I took several blind snaps ...

A 'bizarre' material used by some birds to line their nests in tree cavities could actually save their offspring.

They say birds ... to use a robin's nest - but not unknown, the RSPB said. Maureen Carr The birds have since moved on for the summer The RSPB said that cuckoos will often lay their eggs in the ...