I thought the painting was great but was disappointed that the accompanying description did not mention what species of Brazilian hummingbird was depicted.
Pat Price wrote:
"The hummingbird I think is a Sappho Comet. See: 'An Eye For Art-Studying Nature - Martin Johnson Heade.' Thanks for this. I like Johnson's paintings. There's something about his marshes..."
So I looked up "An Eye For Art-Studying Nature - Martin Johnson Heade." Turns out you can download the segment here. It also includes John James Audubon. Doesn't get much better than that. (Thanks, Pat!)