Crecimiento y desarrollo del plumaje en pichones de la cotorra aliazul (Hapalopsittaca fuertesi) en la Cordillera Central colombiana
Growth and plumage development of Azure-winged Parrot (Hapalopsittaca fuertesi) nestlings in the Central Andes of Colombia
DOI:
https://doi.org/10.59517/oc.e182Keywords:
chicks, Colombia, growth rate, Hapalopsittaca fuertesi, plumage developmentAbstract
The Azure-winged Parrot (Hapalopsittaca fuertesi) is an endemic and critically endangered species from Colombia for which biological information that might aid conservation efforts is largely lacking. In this study, I present data on growth of 25 nestlings of H. fuertesi obtained in January-July 2005 in a high Andean forest area in depto. Quindío. I described growth in body mass, primary feather length, bill length and tail length using a logistic equation, and compared my data with those available for other species of psittacids. In addition, I described the sequence in which true feathers appear on the head, body, wings, and tail during the permanence of chicks in the nest (average 58.8 days). Body mass reached an asymptotic value during an early phase of the nestling period, as in other psittacids of similar size. However, the growth rate observed in H. fuertesi was more similar to that of lowland species of psittacids of larger size, which might be due to reduced food availability in high Andean areas. The growth curves obtained for body measurements, together with patterns of plumage development described in this study, are useful tools to estimate the age of nestlings of unknown age and can be useful for captive breeding programs.
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