T H E HERONS AND BITTERNS (Ardeidae) a r e a world-wide family of some fifty-nine species, and all b u t four of the fifteen in the Palaearctic have extensive breeding ranges that take them much or all of the way across Asia and Europe, while ten of these are also found in Africa, five of them in Australia and four of them in America, T h e Squacco Heron (Ardeola ralloides) is no exception to this...
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