Abstract
Abstract ABSTRACT We modeled annual apparent survival of Band-tailed Manakins (Pipra fasciicauda) inhabiting a contiguous forest site and a 10.9 ha forest fragment in lowland Bolivia based on six years of capture-recapture data. There was significant age-related variation in apparent survival, but adult survival rates did not differ significantly with sex. Apparent survival rates of immature birds differed between the two locations, while adult survival rates did not. The most parsimonious model therefore estimated annual survival at 10% for immature birds in the contiguous forest site, 53% for immature birds in the forest fragment, 46% for adults in the first year after initial capture and 68% for adults in subsequent years. Forest fragmentation may have reduced immature dispersal, leading to inflated apparent survival rates in the forest fragment.
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