246 Supplementary Notes to ' The Birds of India.' 



Austen obtained a specimen which he at once identified from my 

 description ; and he describes the tarsus of this as five inches long. 

 Most unfortunately, however, his specimen was destroyed after 

 he had taken the fresh measurements. There is no doubt, how- 

 ever, of its being nearly allied to A. ncevia, but differing in being 

 somewhat smaller and more slender, having a smaller bill, and in 

 the tarsus being longer and more slender. 



31. Aquila pennata. 



If our Indian bird is the same as the European one, which 

 has hitherto been generally allowed, I find that the mass of evi- 

 dence is against my belief in the white-bellied bird being the 

 young one. At one time I had the opportunity of getting many 

 specimens, and my impression is that in more than oii^ case I 

 bad found young dark feathers springing from among old 

 white ones ; but as at least two instances are recorded of brown- 

 plumaged young birds having been taken from the nest, I must 

 give up my old views. Quite recently, however, I have been 

 told of one young bird in dark plumage, and another one white 

 below, having been taken from a nest in Europe ; and Mr. Hume, 

 in his ' Scrap-book,' is also inclined from information he has re- 

 ceived to agree with me. 



Mr. Blyth, however, has just told me that he considers the 

 Indian race to be more nearly allied to the Australian Aquila 

 morpknoides than to the European bird. So the whole subject 

 appears to require fresh researches. 



33. NiSAETUS BONELLI. 



I found an eyry of this fine Eagle at Toglegabad, near Delhi, 

 on a bush or small tree growing out of the old fort-wall. Mr. 

 Hume has also discovered the same nest. 



34. LiMNAETUS CALIGATUS. 



I do not see in what respect Tytler's Spizaetus andamanensis 

 differs from the young of this common Bengal Eagle. It corre- 

 sponds in size and in coloration with that described in my text. 



36. LiMNAETUS NIPALENSIS. 



Falco orientalis, Temm. & Schl., given by me, but with a query, 

 as the same as the Himalayan bii'd, is very distinct, being smaller 

 and wanting the fine crest. Our bird extends throughout the 



