FROM SPAIN. 493 
shoulder-patch, but still one and the same bird as the Imperial 
Eagle of Slavonia or Southern Russia. It is a finely-marked 
colour variety, and not even a Spanish or South-west Huro- 
pean form of the bird; for these regions contain Imperial 
Eagles which are absolutely identical in colour with those of 
our own country, and, according to my own observations, the 
difference between the two is not so great as between the 
true “ Stein” Eagle and the form known as the Golden 
Hagle. 
I must now proceed to speak of the light-yellow eagle, 
which is considered to be an immature bird. In Spain I saw 
only these light-coloured specimens, and none in the transition 
stage ; all were equally pale, and in Africa it was the same. 
If, therefore, it is an immature state, it is strange that I never 
met with an adult individual, but invariably with young birds, 
which were all exactly alike in both countries. Again, allow- 
ing it to be the immature plumage, these individuals must, as 
they all had the same shade of feathering, have been born in 
the same year, and this would undoubtedly have been a most 
remarkable coincidence. 
If, in addition to the eagles already known in Spain, 
another species has just been discovered, or still remains to be 
discovered, it is, or will be, not a dark but a very pale bird. 
It is possible that an Aguila adalberti, or whatever it may be 
called—for names are of no consequence—does exist in Spain; 
but it will eventually prove to be the light-brown eagle, which 
up to the present time has been considered immature, instead 
of the dark bird which has hitherto borne the above name. 
There may, however, still be a new undescribed African species 
whose range extends into the middle of Spain, for that 
country already agrees in many points with the neighbouring 
continent as regards all the divisions of the animal-world ; 
but, so long as this is still undetermined, I shall hold the 
