Sven Zacek / Four Roe deer (Capreolus capreolus) bucks with velvet antlers and the shadow of a fifth buck, Tartumaa, Estonia, March.
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Donald M. Jones / White-tailed Deer (Odocoileus virginianus) bucks sparring, western Montana
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Donald M. Jones / White-tailed Deer (Odocoileus virginianus) bucks, central Montana
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Mark Raycroft / White-tailed Deer (Odocoileus virginianus) bucks in velvet
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Sven Zacek,Sven Zacek / Roe deer (Capreolus capreolus) bucks on snowy field in SOuthern Estonia, March.
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Bertie Gregory / 2020VISION / Close-up of Grey squirrel (Sciurus carolinensis) holding a nut, feeding in Regent's Park, London, England, UK, April. Did you know? Grey squirrel males are called bucks and females are called does.
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Terry Whittaker / 2020VISION / Two Fallow deer (Dama dama) bucks during fight, rutting season, Richmond Park, London, UK, October (This image may be licensed either as rights managed or royalty free.)
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Wild Wonders of Europe / Möllers / Fallow deer (Dama dama) bucks and does in front of beech trees in full autumn colour, Klampenborg Dyrehaven, Denmark, October 2008
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Wild Wonders of Europe / Möllers / Rear view of two Fallow deer (Dama dama) bucks, Klampenborg Dyrehaven, Denmark, October 2008
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David Kjaer / Fallow Deer ( Dama dama) bucks or males at sunrise on a misty morning in Richmond Park, London, England
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David Kjaer / Fallow Deer (Dama dama) bucks or males fighting during autumn 'rut' in Richmond Park, London, England
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David Kjaer / Juvenile European cuckoo {Cuculus canorus} fed by Reed warbler {Acrocephalus scirpaceus}. Bucks, UK. Cuckoos lay their eggs in the nests of reed warblers and when they hatch, the warbler mother will a...