Least Flycatcher

Least Flycatcher
Muscicapa minima, Baird [now Empidonax minimus]
Octavo edition, plate 491

“This Flycatcher has a great range through the countries bordering upon the Upper Missouri. Several specimens were procured by some of my companions, and I not unfrequently met with them in my rambles along the sides of small though interesting valleys in the ravines so numerous about the Yellow Stone River and Fort Union. In its habits it resembles the smaller species allied to itself, all of which have been already described. I have no doubt that it breeds in the sections of the country where I saw it, but its nest escaped our utmost endeavours to discover it.”

John James Audubon, Birds of America (New York: J.J. Audubon; Philadelphia: J. B. Chevalier, 1840-1844), vol. 7, p. 343.

View bird in National Audubon Society Guide to North American Birds.