The male is generally dark sky blue that is lighter on the forehead and rump and is grayish on the lower belly.

The immature is orange-brown that is darker on the back, and it has a hint of blue on the forehead and cheek.

[4] The glaucous-blue grosbeak nests in northeastern Argentina, southeastern Brazil, and much of Uruguay.

[4][2] The glaucous-blue grosbeak is known to forage in pairs but other details and its diet have not been published.

[4] The glaucous-blue grosbeak usually sings from dense cover, "a fast, high, hurried jumbled warbling" [1].