Springtime is the season for birds to begin building nests in anticipation for the eggs to come. Nests made of grasses and sticks are typical but have you seen a cormorant using seastars, blue tits collecting horsehair from a barbed wire fence or penguins on nests made completely of stones? From woodpeckers excavating nest holes in tree trunks to albatrosses constructing a platform out of sand - this gallery includes some unexpected nests.
