Chestnut-headed Nunlet

Here the details of the Chestnut-headed Nunlet named bird below:

SCI Name:  Nonnula amaurocephala
Protonym:  Nonnula amaurocephala Am.Mus.Novit. no.2 p.2
Taxonomy:  Galbuliformes / Bucconidae / Nonnula
Taxonomy Code:  chhnun1
Type Locality:  Manacapuru, Rio Solimoes, Brazil.
Author:  Chapman
Publish Year:  1921
IUCN Status:  Least Concern

DEFINITIONS

NONNULA
(Bucconidae; Ϯ Rusty-breasted Nunlet N. rubecula) Mod. L. nonnula  nunlet, little nun  < dim. Med. L. nonna  nun  < Late Gr. νοννα nonna  nun  < νοννος nonnos  monk; "For the more debile and passerine form of Malacoptila, represented by the Bucco rubecula, Spix, and Lypornix ruficapilla, Tschudi, I propose the new generic or subgeneric appellation Nonnula, type N. rubecula (Bucco rubecula, Spix, Av. Bras. i. t. 39. fig. 1. p. 51).  The members of this section are much inferior in size to the true Malacoptilæ." (P. Sclater 1853).
Synon. Microtrogon.

nonnula
Mod. L. nonnula  nunlet, little nun  < dim. Med. L. nonna  nun  < Late Gr. νοννα nonna  nun  < νοννος nonnos  monk.

amaurocephala / amaurocephalus
Gr. αμαυρος amauros  dark; -κεφαλος -kephalos  -headed  < κεφαλη kephalē  head.