Empty Bird Nest

Source: Empty Nest - Luke Brugger, unsplash.com
Nest With Eggs

Source: Nest with Eggs - Ian Baldwin, unsplash.com
Enclosed Bird Nest

Source: Enclosed Bird Nest with Side Entrance - Ryan Hodnett, Wikimedia Commons
Stork And Nest

Source: Stork and Nest - Xocolatl, Wikimedia Commons
Swallow Nest

Source: Swallow Nest - Radhika Kochhar, Wikimedia Commons
Crow Pheasant Nest

Source: Crow Pheasant - J.M. Garg, Wikimedia Commons
Mallard Ground Nest With Eggs

Source: Mallard Nest [Built on Ground] - USFWS Mountain-Prairie, Wikimedia Commons
Cliffside Nests Of Coastal Birds

Source: Nests built in Cliffside by Coastal Birds - Niteshift, Wikimedia Commons
Bird Nest

Source: Bird Nest [Profile] - Virginia State Parks Staff
Colony Of Bird Nests

Source: Multiple Bird Nests in Colony - Morfheos, Wikimedia Commons