Purple martin
Progne subis       
Identification Tips:
-  Tiny bill
-  Largest swallow
-  Most often seen flying
-  Will nest communally at martin houses in residential and agricultural
areas
Adult male:
-  Dark purple plumage, usually appears black
-  Forked tail
-  Immature males similar to female but may be splotched with dark purple
Adult female:
-  Dark gray upperparts with some purple coloration
-  Whitish underparts with gray breast band and throat with some speckling
on sides and belly
-  Forked tail
-  Immature plumages similar to female
Similar species:                        
The male Purple Martin is easily told from other swallows by its entirely
dark plumage.  It is vaguely similar to the starling but has a smaller bill,
longer wings and a darker plumage.  Female Purple Martins are similar to
Bank and Northern Rough-winged Swallows but are larger, and flap more slowly.
At close range, the darker upperparts of the martin are evident.