The White Throated Hummingbird is found in forests, parks, woodlands and gardens in North Eastern Argentina, South Eastern Brazil, Uruguay and Paraguay and is not considered endangered. It is quite an athlete and acrobat.
It is only with a camera's capture that one can really see the marvelous grace and athletic ability of these tiny birds.
REGUA had a "moth wall" which blew me away. The Atlantic Rainforest has no light pollution to distract the moths from the desired spot. A mercury vapor lamp or incandescent light is shined on the wall and the moths come and spend the night. At dawn you can go out and photograph them. After that the owner went outside with a feather duster and gently urged the moths to fly away. I am guessing this is the Artace cribraria, called "dot lined white" moth.