Family Trogons (Trogonidae)

Least Concern

Ecuadorian Trogon (Trogon mesurus)


French: Trogon d’Équateur German: Guayaquiltrogon Spanish: Trogón colinegro occidental

Troctes mesurus

Cabanis and Heine

, 1863,

Babahoyo, Ecuador


Closest relatives may be T. clathratus, T. massena and T. comptus. Usually considered conspecific with T. melanurus, but differs in its white vs blackish iris (3); shining moss-green vs shining blue-green head and breast of male (2); grey on female below extending to mid-breast vs extending to lower breast in other taxa (hence more pinkish-red on female mesurus) (2); different song, “a slow, short series” vs “an often long-continued series”#R (2). Monotypic.


W Ecuador (S from Esmeraldas) and NW Peru (Tumbes, Piura).

Descriptive notes

30·5–32 cm; male 96–111 g, female 94–100 g. Male has shining green upperparts with black-and-white vermiculated wing-coverts, face and upper throat black, lower throat and... read more


Male song comprises a slow, short series of “cow” notes that typically starts softly and grows in... read more


Inhabits dry, deciduous and semi-humid forest and woodland (typical tree species including ... read more

Food and feeding

Diet and foraging behaviour are presumably much like those of better-known T. melanurus, but there seems to be no published... read more


Apparently nothing known, with no information even on seasonality.


Largely resident, but local movements have been speculated to occur in W Ecuador.

Status and conservation

Not globally threatened. Fairly common and widespread in Ecuador; rare to fairly common within very small range in NW Peru, although it has recently been extended S to Piura... read more

Recommended citation

del Hoyo, J., Collar, N. & Kirwan, G.M. (2019). Ecuadorian Trogon (Trogon mesurus). 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 14 November 2019).