A completely leucistic Rufous-bellied Thrush (Turdus rufiventris) breeding successfully in central-east Argentina
COLOMBO, MARTÍN; GONZALEZ, EXEQUIEL; JAUREGUI, ADRIAN; SEGURA, LUCIANO N.
ARARAJUBA: REVISTA BRASILEIRA DE ORNITOLOGIA
SOC BRASILEIRA ORNITOLOGIA
Lugar: Pelotas, RS; Año: 2018 vol. 26 p. 207 - 209
Leucism is a color aberration characterized by the absence of pigmentation which can either be partial or complete.Abnormally colored birds have reduced chances of survival and mating success compared to normally colored individuals. We presenta documented record of a complete leucistic adult Rufous-bellied Thrush (Turdus rufiventris) breeding successfully in Cariló, centraleast Argentina. In the winter of 2016 we observed a completely white thrush. In the subsequent spring we observed it collecting foodand delivering it to two fledglings, which were normally colored. The adult thrush survived its own post-fledging period despite itsincreased predation risk due to conspicuousness, managed to get a breeding pair and breed successfully. Since reports of abnormallycolored birds breeding in wild populations are rare, we emphasize the importance of making this information available.