This male was flying into a lek in North Wales taken while I was using the car as a hide. They make two different noises while lecking. They make a constant bubbling call, interspersed with a harsh hissing chooweee, and I can confirm that this bird with its open beak was hissing. Photographing lecking birds on the ground is relatively easy but getting one in flight took fast reactions and a bit of luck.
Taken with a Nikon D500 and a 300mm f4 lens with a 1.4x converter. 1/1000 second f5.6 ISO 1800 (25 March 2017)
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Wow, some people have a real talent for photography don’t they? Thanks for the pics Tim Melling and thanks Mark, for posting.