298 



THE ZOOLOGIST. 



as a possibility; but of the fact of there being two males feeding 

 the one brood of young there was no room for doubt. 



Since 1907 the only information that I could get about this 

 colony was from a reference in the 'Irish Naturalist' (October, 

 1909, p. 226), to four Tree- Sparrows having been seen near Bally- 

 shannon, a few miles from the place where I found the birds. 



Then in July, 1913, there was a very full account published 

 in ' British Birds,' by Professor C. J. Patten, of a much larger 



D— Garden. R— Garden. 



House. 



House. 

 About three hundred yards. 



«OH 



S. 



Sea front. 



N. 



The broad lines represent stone walls about ten feet in height. The 

 birds breed in holes six or eight feet from the ground in these. The figures 

 represent the nests of 1907. The capital letters represent nests of 1915. 

 "3" and "P" indicate presence of breeding birds, exact nesting site not 

 discovered. The nests " C " and " E " I believe to have been in the nesting- 

 hole that "2" was in. The distances from left to right are larger than 

 indicated. 



colony of Tree- Sparrows found by him on Inishtrahull Island, 

 to the north of Co. Donegal. It was not till June, 1915, that I 

 was able to revisit my colony and get the information about it 

 which I now give. I was naturally very glad to find that the 

 colony was still in existence in precisely the same locality, and 

 that the birds had slightly increased in number. I believe 

 that the nests that I found in 1907 represented, as I have said, 

 two or three pairs of birds. The nests that I found this June, 



