Common Tern - Sterna hirundo
Canon 600mm f5.6 for 1/3200th @ iso400
The adult bird has misjudged how close the juvenile was to the fish, the juvenile has grabbed the fish and a tug of war starts to take place, neither bird wanting to release their hold on the fish, webbed feet looking for a purchase on the wet pebbles to help pull against the grip of the other bird. The idea behind the adult presenting the fish to the juvenile is not to feed it on the beach but to get the juvenile up in the air and flying before it earns the reward.
The adult bird has misjudged how close the juvenile was to the fish, the juvenile has grabbed the fish and a tug of war starts to take place, neither bird wanting to release their hold on the fish, webbed feet looking for a purchase on the wet pebbles to help pull against the grip of the other bird. The idea behind the adult presenting the fish to the juvenile is not to feed it on the beach but to get the juvenile up in the air and flying before it earns the reward.