What's the name of this bird's species, please?
I would say that it is a bald eagle. I did a search for similar birds but nothing quite matches the build and coloration. The bird in question appears to be drying out after being in the water. On the coast of British Columbia they often feed on fish caught from the water's surface and occasionally get a bit damper than they expect, they then have to dry out like the one in your image. See the following sites: From Cornell University's site about birds