Nick Garbutt / RF - Portrait of Toco toucan (Ramphastos toco) with colourful beak, southern Pantanal, Brazil. (This image may be licensed either as rights managed or royalty free.)
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Tim Laman / Rhinoceros hornbill (Buceros rhinoceros) female scratching bill against tree branch, Halabala Wildlife Sanctuary, Narathiwat Province, Thailand.
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Jack Dykinga / Pair of Black-necked stilt (Himantopus mexicanus) in courtship ritual, touching bills. Gilbert Riparian Preserve, Arizona, USA. 5 of 5 in a series showing courtship and mating ritual.
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Marie Read / Female Northern cardinal (Cardinalis cardinalis) with snow-covered bill from eating seeds in deep snow, winter, New York, USA.