For what purpose is the "Abba" used in falconry?

The "Abba" is used in falconry primarily to calm freshly trapped raptors. When a falconer captures a bird of prey, it can be very stressed and agitated due to the sudden change in environment and circumstances. The Abba, which is a form of hood, can be placed over the bird's head to reduce visual stimulation and help soothe it. By limiting the bird’s sight, the Abba helps in calming the raptor, allowing the falconer to handle it safely and carry out necessary care or training. This is a crucial step in establishing a trusting relationship between the falconer and the bird after capture.