Attacking a crow. With the crow as scale, we can now see the smaller size of the Merlin "Pugnacious; often harrasses much larger birds. An active and energetic hunter ...." (The Sibley Field Guide to Birds of Eastern North America, p. 114) Photo taken with a Nikon D90 using a Nikon 400mm f/5.6. October 27, 2011. Back..