234 
British Birds. 
on the ledge of a cliff, and is a flat roughly made structure of small sticks, sea-weed 
and grass-bents. The eggs are two in number, white, and measure about an inch- 
and-a-half in length. 
The Rock-Dove. 
The Passenger Pigeon. 
THE TURTLE-DOVE. 
(Turtur turtur.) 
A summer visitor to 
England, but not known to 
the northward of Southern 
Scotland, and of rare in- 
stance in Ireland, though 
Mr. Ussher believes that 
THE PASSENGER 
PIGEON. 
(Ectopistes 
migra toria.) 
Although this Pigeon, which is found over the greater portion 
of North America, has been said to have occurred in Britain on 
five occasions, it is doubtful whether any of the birds were really 
wild ones, 
the feathers of which are grey 
with a cinnamon-coloured 
base and a good deal of 
white on all but the centre 
feathers, which are slaty 
black. The length of the 
bird is about sixteen inches. 
It may be recognised by its long and pointed tail, 
The Turtle-Dove. The Oriental Turtle-Dove. 
