. The Wilson bulletin . A band of thieving pirates watching for an opportunity torob other sea birds of their While primarily for the attraction of a mate the gular-sac ofthe male man-o-war may be used as an aggressive fea-ture. Note the bird in the upper left-hand corner.

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Photo credit: © Reading Room 2020 / Alamy / Afripics
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1894