Sulphur-rumped Flycatcher Myiobius sulphureipygius

Active and attractive small flycatcher of humid tropical forest in the lowlands. Feeds mainly at eye level in forest understory, where sallies and flutters after insects, fanning its broad tail and drooping its wings to show off the big, pale-yellow rump patch. Often joins mixed-species feeding flocks that roam through the understory. No similar species in Mexico.