I released 2 pairs of garden doves after keeping them in the Dovecot with the aid of a homing net for 6 weeks. They have stayed in the area and spent last night on the roof of a nearby barn. They have not returned to the dovecot for and have left a 2-3 week old chick. They have been away for 30 hours now. Is it possible they will return to the dovecott after this period of time and should we be considering hand rearing the chick now ?