On Animals, Books 13-26

Chap. VI. Concerning the gyrfalcon.

VII. Concerning the genus of falcons that is called the mountain falcon.

VIII. Concerning the falcons that are called pilgrims.

IX. Concerning the humped genus of falcons.

X. Concerning black falcons.

XI. Concerning the nature of the white falcon.

XII. Concerning the nature of red falcons.

XIII. Concerning the falcon that has azure feet.

XIV. Concerning the small falcon that is called the merlin.

XV. Concerning the three genera of lanners and their rearing.

XVI. Concerning the four genera of mixed falcons and the mode of the mixing of these falcons.

XVII. Concerning the regimen of domestication and the regimen of boldness and the regimen of the health of falcons.

XVIII. Concerning the cures for the infirmities of falcons, differing according to William the Falconer.

XIX. Concerning the cures for the infirmities of falcons according to the falconers of Emperor Frederick, otherwise than before.

XX. Concerning the regimen of hawks in infirmities according to the experiments of Emperor Frederick.

XXI. Concerning the regimen of goshawks according to the experiments of William.

XXII. Concerning the regimen of the domestication of hawks and the regimen of hawking.

XXIII. Concerning the regimen of the infirmities of all birds of prey according to Aquila, Symmachus, and Theodotion.

XXIV. Concerning other two genera of falcons, and concerning their places of habitation and the distinction of hawks.

[Table of birds 41-114 follows as listed]