RECORD OF LEUCISM IN Ammodramus humeralis (BOSC, 1792) (PASSERIFORMES: PASSERELLIDAE) IN CENTRAL-WEST BRAZIL

Abstract

Several cases of chromatic mutation in birds have been reported in the scientific literature and, apparently, leucism cases are the most frequent. This study reports a case of partial leucism in Ammodramus humeralis (Passeriformes, Passerellidae) in the Mato Grosso State, Brazil: the first chromatic mutation case for this species in Brazil and most likely for the Neotropical region either.

New Records of Birds With Aberrant Plumage in Rio Grande Do Sul, Southern Brazil

“…Even if these cases of aberrant plumage in birds aren't unusual occurrences in the wild, some cases simply aren't considered relevant enough by researchers (Corrêa et al, 2012;Corrêa et al, 2017b;Petry et al, 2017;Vieira et al, 2018b). However, it is important to disseminate these cases in the literature, showing the respective patterns of aberrant colorings and the aff ected species (Corrêa et al, 2013;van Grow, 2013;Corrêa et al, 2017a;Petry et al, 2017;Quirino and Corrêa, 2018), as it would be a foundation for future studies, in order to elaborate a regional and/or national list that would gather all the possible cases of birds with aberrant plumage. Finally, we recommend a thorough review of reports already published on indexed journals in Rio Grande do Sul (specially of individuals with leucism), in order to verify if these cases, instead of leucism, could be of individuals with progressive greying.…”