40 the number of different songs a single male Carolina Wren can sing
400 the number of small twigs that might make up a House Wren nest
36 notes per second a Winter Wren can sing.
10 times louder is the Winter Wren's call than that of a crowing rooster (in proportion to its size and weight)
1821 the year that the Bewick's Wren was first identified by John James Audubon.
3,000 times a Carolina Wren might sing its song in a single day.
Wren image and facts provided by WBU, Inc.