David Gallan / Spotted-tailed quoll (Dasyurus maculatus) scent marking in Monga National Park, New South Wales, Australia. Remote camera, triggered by movement. Highly Commended 2018 Wildlife Photographer Of The Yea...
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Marie Read / Wood Ducks (Aix sponsa), females behave aggressively toward a male (second from right) that is trying to join them on a floating log, autumn, New York, USA, October.
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Marie Read / Canada geese (Branta canadensis) two during territorial fight in early spring, Ithaca. New York, USA
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Marie Read / American avocets (Recurvirostra americana) two during aggressive (territorial) encounter, Bear River Migratory Bird Refuge, Utah, USA, May.
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Matthew Maran / Red Fox (Vulpes Vulpes) patrolling the allotment North London, England, UK, September.