The Endurance of Birds. 217 



In my opinion the Grey-head must be classed as an 

 occasional breeder. 



The young" were almost entirely reared upon live insects, 

 gentles and mealworms, pins flies, etc., captured in the aviary. 



Cinnamon Tree-Sparrow. — I have never bred this 

 species, bnt Mr. W. E. Teschemaker successfully bred one or 

 two broods, ami it may safely be classed as a probable breeder. 



From my own experience and what 1 gleaned from Mr. 

 Teschemaker's account of his success, I do not think young 

 would be successfully reared, unless live insects were liberally 

 supplied, during the time they were being fed in the nest. 



House Sparrow. — 1 need not linger over this species, 

 which I bred at the first attempt, but as soon as the young were 

 able to fend for themselves I released them, as I had no desire 

 to repeat the experiment. 



I should say they would breed freely in any roomy out- 

 door aviary, but few will make the attempt, for, as a fellow 

 aviculturist remarked at the time, breeding the House Sparrow 

 was about as useful as breeding the common mouse. 



Tree Sparrow. — This is a more attractive species, and 

 success less easily obtained than with the preceding species. 

 On and off I have had five or six pairs, but only on one occasion 

 did a pair go to nest with me. One young bird was reared and 

 lived for several years. It was reared entirely upon live food. 



I did not repeat the experiment, as the following season, 

 with a few exceptions, I cleared the aviaries of British species. 



A probable but not a free breeder in captivity. 

 Yellow-throated Sparrow. — A pretty and interesting- 

 species, but they are not often on the market, and have never 

 appeared in large numbers. 



It has not bred in my aviaries, and in my opinion is not a 

 free breeder in captivity. 



I also consider it is better taken indoors for the winter 

 months, as, though one male lived six years with me, out of 

 doors all the year round, abnormal wet or abnormal severity 

 is liable to carry them off. 



