OVIPOSITION IN PIGEONS 303 
March 21. Male (after short period in sight of female, that 
they might become re-acquainted) allowed to enter. 
March 27.: Egg laid. | 
Case 5 (1910). Female, the same as in cases 3 and 4. She has 
laid no eggs since last season (1909.) 
January 20. I begin to allow male in cage, at same time putting 
nest in. 
January 29. Egg laid. 
Case 6 (1908). Female, no. 19. Virgin, has never laid. No 
nest given. In this case, the date on which the female was first 
given the requisite stimulus cannot be stated so definitely as in 
the other cases. 
July 12. Male,-in his cage, placed close to cage of female. 
Cooing commences. Female so excited that she several times 
assumes, and maintains in extreme degree, the copulation posture. 
July 14. Male allowed into cage of female, but he fights her, 
so that it is necessary to remove him (otherwise the female might 
be painfully injured), and to allow the pair a few days more of 
preliminary acquaintanceship. 
July 18. Male allowed to begin his series of daily visits. 
July 22. Egg laid. 
Case 7 (1910). Female no. 19, the same as in case 6. She has 
laid no eggs since last summer (1909.) 
For several days before contact with the male, a nest was kept 
in her cage; but she paid no attention to it, showing that the nest 
alone would not stimulate her to lay. 
January 20. Male allowed to enter. 
January 26. Egg laid. 
SUMMARY 
1. In six eases, stimulation of a female dove by a male, without 
copulation, was followed by oviposition; and in one other instance 
(case 2), stimulation by the hand of man in imitation of a male 
dove was followed by oviposition 
2. In six of the seven cases (being all except case 3, in which the 
previous history was unknown), it was known that the female 
JOURNAL OF MORPHOLOGY, VOL. 22, NO. 2 
