On the Breeding of Ross's Snoiv-Goose in Captivity. 245 



determined by Mr. Dresser as variations depending on age, 

 are merely individual variations of the young birds. His 

 determination is still more surprising, because he had an 

 opportunity of examining the series of Labrador Jerfalcons 

 in the Brunswick Museum, and evidently did not notice the 

 specimens in moult, as we do not find anything about them 

 in his article. 



The other adult specimen of the Labrador Jerfalcon which 

 we know of (from Newfoundland) is now in the Brussels 

 Museum. It is just like the bird in the British Museum 

 described above, but not so bright. We take this opportunity 

 of thanking M. Dubois for sending us a water-colour drawing 

 and a description of this specimen. 



Perhaps it may be of interest to add that Joseph Wolf, 

 who made the first figure of the female Labrador Jerfalcon 

 for Mr. Dresser, did not believe that the original of his 

 picture was an adult bird (see Palmer's ( Life of Wolf/ 

 p. 272). 



XXIII. — Notes on the Breeding of Ross's Snow-Goose in 

 Captivity. By F. E. Blaauw. 



At a meeting of the British Ornithologists' Club on March 

 20th, 1901 (see Bull. B. O. C. xi. p. 55), I exhibited an egg 

 of the rare Ross's Snow-Goose {Chen rossi) laid in captivity -/- 

 by a solitary female kept by me at Gooilust. A year later, 

 through the courtesy of Dr. Heck of Berlin, I received a 

 second specimen of this species, which fortunately proved, 

 as I hoped it would, to be a male. The birds soon paired, 

 and in the beginning of May 1902 the female made a nest 

 under a bush in her enclosure. The nest was, as is usual 

 with Geese, a small depression in the soil, lined witli dry 

 grass and grass-roots. 



Towards the end of the month the female began to lay, and 

 on the 30th, when the full complement of five eggs had been 

 deposited, she began to sit, having in the meantime abun- 

 dantly lined her nest with down from her own breast. 



The two birds had always been of a very retiring dis- 



