Fan-tailed Warbler (Basileuterus lachrymosus) [XC461271]
by Richard E. Webster from Arroyo Verde, NCI Reserva Monte Mojino, Sonora, Mexico (call, song)
Fan-tailed Warbler (Basileuterus lachrymosus) [XC521386]
by Scott Olmstead from Cerro de San Juan (near Tepic), Tepic, Nayarit, Mexico (song)
Subspecies
Affinities uncertain. Generally considered closest to Basileuterus, and genus sometimes subsumed in latter; in bill shape and long, graduated tail resembles Icteria, but this may be due to convergence. Paler birds in north of range described as subspecies tephra and darker ones in southern as schistacea, but differences are clinal and naming of subspecies appears unwarranted.
The following 3 subspecies are recognised:
tephrus (Ridgway, 1902) - Western Mexico.
schistaceus (Dickey & van Rossem, 1926) - South-western Mexico.
lachrymosus Bonaparte, 1850 - Tropical western Mexico (south-eastern Sonora) to north-central Nicaragua.