474 Letters, Extracts from Correspondence, Notices, fyc. 
XLI.— -Letters, Extracts from Correspondence, Notices, fyc. 
The following letters, addressed to the “ Editor of The Ibis,” 
have been received since our last issue :— 
London, July 25th, 1863. 
Sir, —In the July Number of c The Ibis/ I find a letter from 
Mr. Tristram, in which, after making various observations on 
the non-migratory habits of the Hock Martin ( Coiyle rupes- 
tris ), he says that he is unable to ascertain satisfactorily a 
single locality where it is only found in summer. Now the bird 
in question certainly leaves Genoa in the winter; it arrives early 
in March, nests in considerable numbers at Schiena d 3 Asino, 
where the torrent Bisagno has its source, and leaves in Novem¬ 
ber. I am, however, inclined to think that the only reason of 
its migration is that Genoa does not present warm rocky nooks 
as Mentone does, and, moreover, is subject to very cold maestrom 
winds coming from the Alps. 
I remain, yours very truly, 
H. H. Giglioli. 
P.S.—As an instance of the contrary occurring, namely, their 
not breeding in the localities they resort to in the winter, I beg 
to quote the following from Jerdon’s ‘ Birds of India/ vol. i. 
p. 166:— “ I have only seen this plain-coloured Martin on the 
summit of the Neilgherries and at Darjeeling, occasionally in 
flocks, at other times in small parties, and only in the cold 
weather. At Darjeeling they seem to be birds of passage entirely, 
as I saw them in October in immense numbers for a few days, 
and subsequently they had entirely disappeared.” 
To the Editor of ‘ The Ibis / 
Sir, — I have read with much interest Mr. Cochrane’s account 
of the habits of Cuculus glandarius. Last winter I passed three 
months on the Nile, and obtained several specimens of this bird, 
but only one of its eggs. On our return down the river, near 
Farshoot (Jan. 28), I fell in with quite a colony of this Cuckoo, 
and shot several specimens. While I was in the act of picking 
up a wounded female, the sharp eyes of my Arab attendant 
