Why do birds lay eggs in the spring?(07)

Why do birds lay eggs in the spring?(07)


Image gallery: What Birds Lay Green Eggs

What Bird Lays Green Eggs? (10 Species & Photo ID) The Daily Wildlife Birds That Lay Green Eggs What Bird Lays Green Eggs? Kids 20 Birds That Lay Green Eggs (with Pictures) What kind of bird lays green eggs? DIY Seattle 5 Birds That Lays Green Eggs Description, Facts What animal lays green eggs? DIY Seattle 4 Chickens That Lay Beautiful Green Eggs (My Favorites!) Why do birds lay eggs in the spring?