Family Herons (Ardeidae)

Least Concern

Bare-throated Tiger-heron (Tigrisoma mexicanum)


French: Onoré du Mexique German: Nacktkehlreiher Spanish: Avetigre mejicana

Tigrisoma mexicana


, 1834,

Real del Monte, Hidalgo, Mexico


In the past was often placed in a monospecific genus Heterocnus. Upland population of Sonora and Sinaloa (S Mexico) formerly separated as subspecies fremitus. Monotypic.


Coastal W & E Mexico (from S Sonora and S Tamaulipas) S through Central America to extreme NW Colombia (lower Atrato Valley), with an extremely disjunct population in NW Peru.

Descriptive notes

71–81 cm; 1000–1345 g. Crown and nape black, head-sides grey, black line from eye to throat, foreneck tawny, hindneck finely barred brown and buff, back dark... read more


Gives “who, woh, woh, woh” or “howk, howk, howk” on flushing and, in other situations including... read more


Normally found in coastal zones of salt or brackish water, especially mangroves (and is entirely... read more

Food and feeding

Fish (e.g. eels Anguilla anguilla), frogs, crustaceans and insects (flies). Recorded eating a small rodent. Generally feeds alone... read more


Season variable, ranging from Feb–Apr in Panama to May–Aug in El Salvador, but perhaps year-round in Costa Rica (albeit peaking... read more


Apparently sedentary, but occasionally recorded in the interior of Mexico, e.g. Morelos, perhaps... read more

Status and conservation

Not globally threatened (Least Concern). No information available on overall status and population size, and species is difficult to census (like other Tigrisoma).... read more

Recommended citation

Martínez-Vilalta, A., Motis, A. & Kirwan, G.M. (2020). Bare-throated Tiger-heron (Tigrisoma mexicanum). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 23 February 2020).