Farmers and sportsmen often regard such birds as hawks with disapproval; yet we know that most birds of prey, as these are called, feed upon rats, mice, and other pests. They sometimes kill poultry and game, but even then may perform another service by eliminating birds that are feeble or sick. In a recent experiment involving many flights by homing pigeons, the pigeons were frequently attacked by hawks, but the only pigeon caught was a runt—the weakest member of the flock.

Q. Which of the two services performed by hawks is more important? Underline.