I used Merlin to id a male cardinal and a house sparrow. The process is a very simple one and very satisfying.
I'll try to identify 3 birds with same colors but on different body parts tomorrow, and then get back to this response.
I particularly liked the Wall of Birds activity. I began looking for what is around where I live, then at places I've visited like Peru and Costa Rica, then where my in-laws live (in TX), and so on. The diversity of birds blows me away. Those flycatchers are amazing-looking. And the cardinal outside my window is just as stunning in his own particular way.
Thanks for the opportunity to widen my view.