Vertebrates found in Cattle Egret chick regurgitates

The vertebrate prey of the Cattle Egret Ardea ibis was determined from 850 boluses regurgitated by advanced chicks over 12 breeding seasons from 1981 to 1993, at three heronries in the Lockyer Valley, south-east Queensland. Vertebrates comprised one species of mammal, 16 species of reptile and nine species of amphibians and included the locally rare skinks Ctenotus eurydice and Eremiascincus richardsonii and Grey Snake Hemiaspisdamelii. In large numbers were the Cane Toad Bufo marinus, the native Eastern Dwarf Tree-frog Litoria fallax and skink Lampropholis delicata. Almost 50 per cent of the amphibian and reptilian species recorded for Lockyer Valley pastures and cultivation were discovered in the Cattle Egret regurgitates.

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