Includes care and husbandry of captive birds during their first year. Left to live as wild birds except for occasional checks such as for blood work, weight, any observed injuries.
Why keep them? Much better survival of first year birds. Also of breeding age. More socially adept.
Diet and nutrition in captivity
Veterinary care when necessary
Facility design to minimize injury and provide “strength training” for birds leading up to release
Segregation of males and females in early spring.
Small population management.