82 
MUSCICAPA SAVANA. 
architects, that this massive and commodious structure 
is sometimes completed in the course of three days. 
About the middle of July, some nests found near the 
Rocky Mountains contained young ones, while in others 
the process of incubation had not terminated. It is 
probable that the cliff swallows rear two broods in that 
region, though in Kentucky and Ohio, agreeably to Mr 
Audubon, they have hut one in the year. During the 
first few days of August, they assemble in flocks, and, 
after several attempts to commence their migration, 
they finally succeed in obtaining a unanimity of purpose, 
and disappear as suddenly as they came. 
GENUS IX. —MUSCICAPA, Linnjsus. 
15 . MUSCICAPA SAVANA , VIEILLOT. 
FORK-TAILED FLYCATCHER, BONAPARTE. 
BONAPARTE, PLATE I. FIG. I. 
Though Brisson, Linne, and Pennant have stated 
the fork-tailed flycatcher to inhabit this region, as far 
north as Canada, still the fact seemed more than doubtful, 
since this bird escaped the researches of Vieillot, and, 
what is more extraordinary, those of the indefatigable 
Wilson. It is, therefore, a very gratifying circumstance, 
that we are able to introduce this fine bird with certainty 
into the Ornithology of the United States, and to 
remove all doubt on the subject. The present specimen 
is a beautiful male, in full plumage; it was shot near 
Bridgetown, New Jersey, at the extraordinary season 
of the first week in December, and was presented by 
Mr J. Woodcraft, of that town, to Mr Titian Peale, 
who favoured me with the opportunity of examining it. 
Brisson published the first account of this bird. That 
we have rejected the name given by Linne may appear 
contrary to our principles ; but in this instance we 
certainly have no option, inasmuch as the same name 
has been very properly retained by Wilson, agreeably 
to Brisson, for the Lanins tyraimus of Linne. Had 
