THE BIRDS OF COOKHAM AND THE NEIGHBOURHOOD. 51 
being from Switzerland. In the summer plumage the throat 
is black and the rest of the under-surface of the body bright 
yellow. I have only once observed the Grey Wagtail near 
London, when I saw one flying along the Regent’s Canal, close 
to the Gloucester Gate of the Regent’s Park, on the 3rd of No- 
vember, 1868. In the neighbourhood of Hampstead and Highgate 
it is sometimes seen in the autumn, and Davy, the well-known 
dealer in the Kentish Town Road, has some occasionally for 
sale at thistime of year. They do not, however, appear to thrive 
well in confinement. 
Budytes. 
41. Budytes campestris. Ray’s Wagtail. 
This pretty little Wagtail is not so often met with by the 
water-side as the two last-named species, hence it is classed 
among the Field-Wagtails, in opposition to the other members of 
the family which are known as Water-Wagtails. The shorter 
tail and other slight modifications of structure, as well as the 
difference of habits, apparently justify its separation under 
the distinct genus Budytes. Another species of this genus, the 
Grey-headed Wagtail (Budytes flava) is also occasionally met 
with in England. Of this latter species I saw a specimen, 
caught near Hampstead this summer, in Davy’s shop. 
Ray’s Wagtail is very often observed on Cockmarsh Common, 
about the middle of May, whence I have seen several specimens 
obtained by the villagers. I think this species is some time in 
gaining the fully adult plumage, that is to say, in donning the 
beautiful yellow breast, which gains for it the provincial name 
of ‘Yellow Dishwasher. In an account of a ‘Berkshire 
Ramble ” recorded in the Waturalist for August, 1866, I men- 
tioned the fact of my shooting two specimens on the 27th of May 
of that year. I well remember that this pair, which at that time 
of year would be in full breeding plumage, had the back green- 
ish-brown and the underparts very pale yellow, their colours 
being wonderfully dull, when compared with a fully adult bird 
in my collection. I have several specimens of Ray’s Wagtail 
from the Gambia, but none of them are in the adult plumage. 
