Very large but rather drab hummingbird endemic to tropical forest in foothills and lowlands of southeastern Mexico. Averages paler below and slightly larger than Wedge-tailed Sabrewing, but only safely separated by geographic range. Feeds at all levels, usually at edges. Note the long graduated tail, pale gray face and underparts, and whitish spot behind the eyes. Male has longer tail than female; female’s tail has narrow whitish tips. Loud and complex song given from a middle level perch, often on vine tangles, can attract attention.