Effects of the light regime and breeding experience on budgerigar reproduction



Female budgerigars, provided with nest-boxes and exposed to male vocalizations, lay more rapidly under a 14 L: 10 D photoregime than under regimes involving shorter light periods, though some birds will lay even when kept under continuous darkness. The photoperiod affects principally the interval between nest-box entry and egg-laying. Birds with previous breeding experience lay sooner than naive birds.