ORNITHOLOGICAL OBSERVATION IN ICELAND. 313 



sometimes not, we have a close parallel between the two species, 

 and this specialization of the parental duties in either sex 

 which we here see in its earlier stages, becomes, in both of 

 them, more complete, after the hatching of the eggs {see post). 

 In the domestic relations of the Peregrine, the same fact is 

 illustrated, but with a curious reversal of the relative parts 

 played by the male and female, as shown by Dr. Heatherley's 

 interesting account of the breeding habits of these birds. At 

 least it seems curious that the male, rather than the female, 

 should actually feed the young, but whether it is so in the sense 

 of being an exception to the general habits of the family, we are 

 not yet, perhaps, in a position to say. 



(To be continued.) 



Zool. 4th, ser. vol. XVII. August, U)13. 2 B 



