Yes, OSPREYS is a Scrabble word!

Letter values in Scrabble US: O 1, S 1, P 3, R 1, E 1, Y 4, S 1.

Is it a valid word?

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

large harmless hawk found worldwide that feeds on fish and builds a bulky nest often occupied for years

Also: fish hawk, fish eagle, sea eagle, pandion haliaetus.