<b>Mudas e massas corporais em aves migratórias do Mangue da Carapeba, Rio de Janeiro, Brasil</b>

Abstract

Migratory birds in stage of cycle life and activity changes appear to be influenced by body mass, which varies with season, time of day, gender and populations. These variations in changes in several locations also may be related to time spent in the area and the local food supply and quality, as well as geographical variations of species. The study aimed to compare the biomass of migratory birds the Carapeba’s mangrove, Campos dos Goytacazes-RJ in northern region of Brazil. The average biomass observed in the Carapeba’s mangrove was lower than north of Brazil. Analyzing the data to seedling species Charadrius semipalmatus in agreement with Brazilian North region. Actitis macularius no well-defined pattern in the distribution of wing feathers. To Calidris fuscicolis, Numenius phaeopus, Pluvialis squatarola was not observed pattern of changes wing feathers because the number of subjects who had seedlings was low. Analysis of tail feathers, few individuals had changed and there was no set pattern for any species. Variations found at feathers and biomass can be related to supply and food quality in different areas and geographical variations of the species.