birds digestive

the picture u see to the left is of the birds digestive system and the birds metabolisn. birds are endotherms the generate enouf heat through metabolisn to mantane a high body temp from 40 degrees celcious to 42 degrees celcious

bird muscle

the pic u see to the left is of the birds muscle system if u was wondering and the breast muscle completes 30% of the birds total weight muscles atached to the fused caller bones