I and the Bird: What is a Swallow?
10,000 Birds
SEPTEMBER 26, 2013
Many species build nests of sticks or mud or spit on human-made structures , or in houses we’ve constructed specifically for their use. Taxonomically, swallows are one of the few families of birds that has seen little change in its ranks. The family is global in its distribution, with 83 species of around 19 genera.
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