Birds in Nest with Beaks Up, Lovely Old Real Photo Postcard

How to beat two birds on a branch, beaks up and poised to chirp? They look like baby birds to me, perhaps eagerly awaiting the arrival of mother to feed them. A very lovely one, with the birds almost disappearing amid the filagree of leaves--a happy discovery.

5 1/2" x 3 1/2" and in very good condition, unused postcard back.