Adam Clarke, on Gen 1:22

“And he blessed them, saying: Increase and multiply, and fill the waters of the sea: and let the birds be multiplied upon the earth.”

“Let fowl multiply in the earth - It is truly astonishing with what care, wisdom, and minute skill God has formed the different genera and species of birds, whether intended to live chiefly on land or in water. The structure of a single feather affords a world of wonders; and as God made the fowls that they might fly in the firmament of heaven, Gen 1:20, so he has adapted the form of their bodies, and the structure and disposition of their plumage, for that very purpose. The head and neck in flying are drawn principally within the breast-bone, so that the whole under part exhibits the appearance of a ship's hull. The wings are made use of as sails, or rather oars, and the tail as a helm or rudder. By means of these the creature is not only able to preserve the center of gravity, but also to go with vast speed through the air, either straight forward, circularly, or in any kind of angle, upwards or downwards. In these also God has shown his skill and his power in the great and in the little - in the vast ostrich and cassowary, and In the beautiful humming-bird, which in plumage excels the splendor of the peacock, and in size is almost on a level with the bee.”

Imported from an open dataset — not yet checked against the printed edition.