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Abstract

The podotheca is the scaly covering of the bare portions of bird legs. Although it is known that birds periodically replace these scales, the process has only been described in any detail for two species. The purpose of this investigation was to describe the timing of podothecal molt in the Black-capped Vireo (Vireo atricapilla) in relation to both date and the progress of the prebasic feather molt. I captured these birds throughout the time they were present at a site within their breeding range in central Texas. I noted the presence of leg scale molt and scored the molt of primary feathers. Although I noted birds molting leg scales from early April through late September, there was a clear peak of activity in June and July. Podothecal molt was evident before the birds began their prebasic feather molt but was also common as they replaced inner primaries. Evidence exists that at least two other species undergo podothecal molt during their prebasic molt like the Black-capped Vireo whereas others do so before or afterward.

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