White-throated Thrush (Turdus assimilis) [XC420006]
by Richard E. Webster from Parque las maravillas, Topilejo, Mexico (call)
White-throated Thrush (Turdus assimilis) [XC252817]
by Guillermo Funes from Mex DF entrance Desierto de los Leones, Mexico (call)
Subspecies
Subspecies form two groups, the "assimilis group" of Middle America and the "nominate group" of South America, commonly treated as two separate species. In addition, subspecies daguae recently considered possibly a separate species, and the three subspecies in extreme south-east of range (nominate, paraguayensis, crotopezus) have been proposed as representing a further species on basis of minor differences. In all cases, however, evidence for such splitting has not been coherently marshalled, and in some instances involves largely subjective vocal assessments. Moreover, some subspecies very weakly differentiated and possibly untenable. Proposed subspecies oblitus (from Costa Rica) merged with leucauchen.
Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
The following 23 subspecies are recognised:
calliphthongus Moore, RT, 1937 - North-western Mexico. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
lygrus Oberholser, 1921 - Central and southern Mexico. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
suttoni Phillips, AR, 1991 - Eastern Mexico (south-western Tamaulipas and north-eastern San Luis Potosí). Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
assimilis Cabanis, 1850 - Central Mexico. Considered by some authors to be a distinct species, White-throated Thrush (Turdus assimilis). Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
rubicundus (Dearborn, 1907) - South-eastern Mexico, western Guatemala and El Salvador. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
leucauchen Sclater, PL, 1859 - Southern Mexico southern on Atlantic slope to Costa Rica. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
benti Phillips, AR, 1991 - South-western El Salvador. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
hondurensis Phillips, AR, 1991 - L Yojoa area of central Honduras. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
atrotinctus Miller, W & Griscom, 1925 - Eastern Honduras and northern Nicaragua. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
cnephosus (Bangs, 1902) - South-western Costa Rica and western Panama. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
campanicola Phillips, AR, 1991 - Cerro Campana, in central Panama. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
croizati Phillips, AR, 1991 - Azuero Peninsula, in south-central Panama. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
coibensis Eisenmann, 1950 - Coiba I and associated islets (off southern Panama). Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
daguae Berlepsch, 1897 - Eastern Panama south to north-western Ecuador. Considered by some authors to be a distinct species, Dagua Thrush (Turdus daguae). Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
phaeopygoides Seebohm, 1881 - North-eastern Colombia, northern Venezuela, Trinidad and Tobago. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
phaeopygus Cabanis, 1849 - Eastern Colombia east to the Guianas and northern Brazil. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
spodiolaemus Berlepsch and Stolzmann, 1896 - Eastern Ecuador and western Brazil south to northern Bolivia. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
contemptus Hellmayr, 1902 - Southern Bolivia. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
paraguayensis (Chubb, 1910) - South-western Brazil, Paraguay and northern Argentina. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
crotopezus M. H. K. Lichtenstein, 1823 - Eastern Brazil. Considered by some authors to be a subspecies of White-necked Thrush (Turdus albicollis).
albicollis Vieillot, 1818 - South-eastern Brazil and northern Uruguay. Considered by some authors to be a distinct species, White-necked Thrush (Turdus albicollis).
oaxacae Orr & Webster, 1968 - Highlands of Oaxaca.
oblitus Miller & Griscom, 1925 - Highlands of northern and central Costa Rica.
BirdLife International Species Factsheet