Caw

Core was a big, golden bird who could speak and worked with Baltazar on Baltazar's ship. Core was living metal from Pheros was eating Gold, and Baltazar promised him all the gold he could eat. Core had a son called Squawk. Core had turned on Baltazar and sent him to the prison planet on Valg-nac but Core worked with him again after tricking The 10th doctor and Martha Jones to find the Ifinite for Baltazar. Core's fate was sealed when he was shot by Gurney (the fake Governer.) (DW: The Infinite Quest)