Perching Birds. 
77 
The Wheatear. 
it is generally well concealed. The eggs are from four to seven in number, 
greenish blue or greenish white, with sometimes a few purplish-brown spots 
round the larger end. 
THE ISABELLINE 
WHEATEAR. 
(Saxicola isabcllina.) 
This is a large Chat of very pale and sombre colour, which 
might be mistaken for a female or young of the Common 
Wheatear, but may always be distinguished by its longer leg, 
the tarsus measuring 1*2 inch instead of f05 as in the 
common species. The sexes are alike in colour, being of an earthy-brown, more 
or less ashy, and the under surface is light isabelline-rufous, becoming sandy-white 
on the throat and abdomen ; the axillaries and under wing-coverts are creamy-white. 
The Black-throated Wheatear. 
The Isabelline Wheatear. 
