American Robin is very common yard bird (even though American Robin can be seen most of the area of USA). The sizes of American Robin are a little bit smaller than Eurasian Collared Doves. Mostly American Robins are seen on ground looking for earth warms. Both of male and female have similar color (female is a little bit paler than male color and belly is whiter than male one).
American Robin belong to the group of thrushes and totally different species from European Robin (a kind of flycatcher) even though both of them are named Robin.