86 EGGS AND EGG-.OOLLECTING. 
that bird is black, below the nape. Its nest, and the 
situation in which it is placed, do not differ from that of 
the bird just named. The eggs are also similar, but are 
said to be subject to greater variation in colour and 
markings. 
THE BLUE-HEADED WAGTAIL. 
Tue nest of this somewhat rare visitor has several times 
been found in Northumberland, and it has in all prob- 
ability nested on many occasions elsewhere, without its 
identity being clearly established. The nest is made of dry 
grass, fine roots, and moss, lined with hair and occasionally 
a few feathers, and is situated on a bank or amongst grass 
or corn in a similar position to that of the Yellow Wagtail. 
The eggs number five as a rule, but six are sometimes 
found, of a yellowish-white ground colour, spotted, freckled, 
and clouded with light brown, and occasionally streaked 
on the larger end with fine blackish-brown lines. 
MONTAGU’S HARRIER. 
ArnoveH this bird rarely breeds with us now, its nest has 
occasionally been met with in recent years in the southern 
counties. The nest is placed on the ground amongst 
heath, fern, furze, or growing crops, and consists of a few 
twigs, straws, and bits of dead grass. Its eggs number 
from four to six, of a faint bluish-white, and are on 
rare occasions marked with a few light reddish-brown 
spots. 
