Yes, GUACHARO is a Scrabble word!

Letter values in Scrabble US: G 2, U 1, A 1, C 3, H 4, A 1, R 1, O 1.

Is it a valid word?

GUACHARO is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

nocturnal fruit-eating bird of South America that has fatty young yielding an oil that is used instead of butter

Also: steatornis caripensis.