BRITISH BIRDS, Vol. I., PI. 4. 



Stages in the Plumage-Growth op the Blue Titmouse. 



Fig. 1 : 2 days. Fig. 2 : 5 days. Fig. 3 : 7 days. Fig. 4 : 9 days. 



Fig. 5 : 11 days. Fig. 6 : 15 



(From Photographs by Miss E. L. Turner.) 



