What is H.J. Slijper's canon?

H.J. Slijper's canon refers to a geometrical formula used for fitting Indian hoods. In falconry, hoods are essential equipment that keep the birds calm and protect their eyes from stress and light. The proper fitting of a hood is crucial to ensure comfort and functionality for the falconry bird. H.J. Slijper made significant contributions to the understanding of how to create well-fitted hoods, which are particularly important for birds of prey from the Indian subcontinent. His work assists falconers in achieving the correct dimensions based on the bird's head shape and size using geometrical principles.

This understanding is particularly valuable in falconry, as a well-fitted hood can lead to better management of the bird's behavior and overall welfare during training and hunting.