Crossword Puzzle anatomy of the birdOnline version Inner body parts of the bird by Katarina Stojkovic 1 body temperature is constant 2 breathing wholes 3 stomach with stones 4 helps bird in flying 5 renal, intestinal and eggs exit 6 bird use it for eating, grooming, killing prey 7 muscular pouch along the esophagus 8 number of chamber in bird heart 7 8 6 2 3 1