Cue” The Bird 
to deposit an egg. A few other instances are known, as 
where a fierce, bird-killing hawk resembles a harmless, 
insectivorous species, 
perhaps by this decep- 
tion deluding = small 
birds. 
Many of the plovers 
have one, or even two, 
bands of black encir- 
cling the neck or 
breast, and in the 
Crook-billed Plover of 
New Zealand there is 
a most interesting mod- 
ification of this ap- 
parent ornament. This 
bird feeds by running 
rapidly around boulders 
and inserting its crook- 
ed bill beneath them 
to obtain the insects 
Fic. 249.—Gyrfaleon. Aggressive coloration which compose its diet. 
In an Arctic Hawk. 5 
The pectoral ring of 
black, instead of being complete, is said to be often less 
developed on the left-hand side. Buller accounts for this 
fact by arguing that that side of the bird is much more 
exposed to danger, as it continually scurries about the bou!l- 
ders, keeping always to the right, and thus the side next 
to the stone needs no protective colouring; and so we 
find this one-sided development of the band. How much, 
