The first four photos show a White-chested Emerald hummingbird. In the last photo the White-chested Emerald is on the right and a White-necked Jacobin is on the left.
We can ID this hummingbird as a White-chested Emerald by its green upperparts, glossed with bronze, especially on the rump and tail; white underparts with sides green (or white spotted with green) and fairly long straight dark bill.
The White-chested Emerald is a new species to our Photographic Life List, which now stands at 528.