"Perhaps it was a warbler or a thrush," I thought, and walked on.
Wilson's Warbler is a common spring and probably fall migrant in Coahuila.
Audubon's Warbler is a common winter visitant and migrant in Coahuila.
One of the most delightful of these hermits is the Kentucky warbler.
What an enigma the Tennessee warbler for a long time remained to me!
For these reasons ...