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'''Swallows''' are a group of [[passerine]] birds in the family [[Hirundidae]]. They are small, streamlined birds with long, slender wings, thus allowing them to fly very fast over long distances. Most species of swallows are migratory.

'''Swallows''' are a group of [[passerine]] birds in the family [[Hirundidae]]. They are small, streamlined birds with long, slender wings, allowing them to fly very fast over long distances. Most species of swallows are migratory.

Though there are smoe swallows which are cavity nesters, most swallows build nests of mud under roofs of barns and buildings, and sometimes under bridges. Swallow numbers have exploded whenever human-built structures have been built near their habitat, thus letting them build their nests.

Though some swallows are cavity nesters, most swallows build nests of mud under roofs of barns and buildings, and sometimes under bridges. Swallow numbers have exploded whenever human-built structures have been built near their habitat, providing space for them to build their nests.

The most famous swallow species is the [[Barn Swallow]], one of the most cosmopolitan bird species. It is found all over the Northern Hemisphere and winters in the Southern Hemisphere.

The most famous swallow species is the [[Barn Swallow]], one of the most cosmopolitan bird species. It is found all over the Northern Hemisphere and winters in the Southern Hemisphere.

==Similar Species==

==Similar Species==

A similar bird to swallows are the [[swift]]s, which are more closely related to [[hummingbird]]s, despite similar appearances and behaviors.

A similar bird to the swallow is the [[swift]], which is more closely related to the [[hummingbird]], despite appearance and behavior similar to the swallow.

[[Category: Birds]]

[[Category: Birds]]