76 Rev. H. B. Tristram on the Ornithology of Palestine. 
resembles that of the Egyptian C. isabellinus in its tone, and in its 
distribution C. ruficollis, though the bird is little more than half 
the size of the latter. It has the same russet collar, the white on 
the throat rather forming two large spots than a gorget, and has 
narrow black streaks down the centre of the feathers on the 
forehead and occiput, with large ochreous spots on the upper 
wing-coverts, its flanks being barred with dark brown. The 
tail, which is not so pale as that of C. isabellinus , is, like 
it, exquisitely barred and dusted with black spots. Of 
course we never found it breeding, since, excepting for one 
single day, we did not revisit its haunts after February. Like 
all the other peculiar birds of the Ghor, and unlike its con¬ 
geners, it must be a permanent resident. Its call-note resem¬ 
bled that of our Nightjar. 
We several times met with Caprimulgus europceus after the 
beginning of April, in the first week of which month I found it 
at Jericho. A skin of C. ruficollis was offered to me for sale by 
a Greek at Jerusalem, who assured me he had bought it in the 
flesh in the market there; and as all his other birds were un¬ 
questionably natives, I had no reason to doubt his statement; 
but his price was prohibitory. I have remarked that, while in 
Algeria the Common Nightjar is a winter visitant only, the Red¬ 
necked species is certainly only a summer migrant, though very 
abundant. It is curious that in the more southern latitude of 
Palestine this certainly does not hold good, and that neither 
species should remain through the winter. 
In the first part of these notes (Ibis, 1865, pp. 76-79) I 
have already fully described the habits and nidification of 
Cypselus abyssinicus (=galilceensis ). As the identity of this 
bird with C. affinis, J. E. Gray, of India seems to be admitted, 
the description of the nests of this species in India given by 
Dr. Jerdon is of some interest: and I cannot but suspect that the 
curious parasitical habit, of which so unquestionable an example 
came under our notice near the plain of Gennesaret, as already 
recorded by me, where the Swift dislodged from their newly built 
nest a pair of the Rufous Swallow ( Hirundo rufula) , may explain 
the strange variation in Swifts* nests spoken of by Dr. Jerdon 
(Birds of India, i. p. 178). Of the hundreds of original nests 
