adult cooper's hawk beak wide open and trying to cough up pellet 6 - accipiter cooperii

cooper39aph39s hawk accipiter cooperii medium-sized native north american southern canada mexico pellet ornithology mass undigested parts bird39aph39s food bird species occasionally regurgitate contents diet include exoskeletons insects indigestible plant matter bones fur feathers bills claws teeth falconry casting passing pellets remove material proventriculus glandular stomach birds prey regurgitation serves health scouring digestive tract including gullet meal gizzard muscular adult beak ope cough open cooper#39aph39#s wide