The Olive Warbler is rare to the United States. It's range is limited to southeast Arizona in the US and central Mexico. It prefers the tops of ponderosa pine, though it will sometimes visit other pines and firs -- above 7,000 feet. Given its limited range and habitat, not as much is known of this little warbler. It primarily eats insects gleaned from the pine trees by creeping over the branches, twigs, and needle clusters. It sometimes can be found in flocks with other warblers, titmice, and nuthatches, though higher up in the trees. It nests high in the pines usually 15 - 20 feet out from the trunk.
After successfully finding the male Olive Warbler last week, I decided to go back up Mount Lemmon and see if I could get a better photo. The spot was the Alder Picnic area at 8,000 feet atop Mount Lemmon. As soon as I arrived I heard this little warbler. It took about 20 minutes to find him, but he was quite agreeable. Here are some of the photos I took: