#R, Jalapa, Veracruz.
Until recently considered to form a subspecies group of T. albicollis. Differs, however, in plumage, with overall browner-grey underparts (1), slightly darker on breast (1), and variably “colder” (greyer or more olive) upperparts (ns); and strongly in voice, song being delivered at a steady pace, typically changing notes all the time, but many repeated 2–3 times, most notes in range 1.5–3.5 kHz, occasionally higher, vs a continuous slow series (“caroling”) of throaty whistles at rather flat pitch, thus present species singing at a higher pace (score 2), with shorter, more variable notes (ns) but often with 2–4 repeats (3) and in larger frequency range (ns)#R. Form daguae appears to form a bridge to T. albicollis, having the browner-grey underparts and darker breast of present species but song of T. albicollis, which see (below). Number of races surprisingly high, given modest levels of differentiation, and thorough revision needed; proposed race oblitus (from Costa Rica) merged with leucauchen. Thirteen subspecies currently recognized.
Food and feeding
Status and conservation
Only subscribers are able to see the bibliography. Login or Subscribe to get access to a lot of extra features!