Nest Game

mystery nest image

Which of these birds made this nest?

Common Nighthawk (hint)
House Wren (hint)
Swamp Sparrow (hint)

Note* There are 16 nests in the game. You are at nest number 1.

If this game is too hard, here is an easier version.

Nest descriptions from: A Field Guide to Birds Nests by Hal H. Harrison. Houghton Mifflin Company. Boston. 1975.