Large groups flying over the town at dawn.
During our stay in Sao Gabriel, each early morning large groups of this swallow were gathering and flying over the town for more than 15 minutes. We supossed that they roost in town.
CitationJosep del Hoyo, IBC1192992. Accessible at hbw.com/ibc/1192992.
Josep del Hoyo, IBC1192992. Video of Grey-breasted Martin Progne chalybea at Sao Gabriel da Cachoeira, Brazil. Accessible at hbw.com/ibc/1192992.
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