Yes, MEGAPODES is a Scrabble word!

Letter values in Scrabble US: M 3, E 1, G 2, A 1, P 3, O 1, D 2, E 1, S 1.

Is it a valid word?

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

large-footed short-winged birds of Australasia; build mounds of decaying vegetation to incubate eggs

Also: mound bird, mound-bird, mound builder, scrub fowl.