318 Capt. Blakiston on Birds collected and observed 



fortunate enough to procure eggs identified by specimens, which 

 are white, more or less blotched with red. 



The white throat in conjunction with the dark breast is so 

 marked a feature that this might well be called Swainson's White- 

 throated Buzzard. 



7. BuTEo BUBEALis. ^ No. 153. Kootsnay Pass, Rocky 

 Mountains, August 21st, 1858. Male and female, killed on the 

 15th of May, 1858, at the forks of Saskatchewan : had red tails. 

 This bird utters a peculiar squealing cry very frequently. 



At the time of my ascending to a nest of this bird (of which, 

 unfortunately, I have only one of the two eggs then taken re- 

 maining), my partner, although the birds made continual sweeps 

 near me, failed in killing either. I have, however, very little 

 hesitation in pronouncing the bird to be the Red-tailed Hawk, 

 and the same as that of which I have the tail and feet, and of 

 which I saw numbers at the Red River Settlement in the spring 

 of 1859. The cry is very peculiar, and caused me to give the 

 bird, for the time, when I had no books of reference, the name 

 of the Squealing Buzzard. 



8. Archibuteo lagopus. Although I saw numbers of this 

 patchwork-looking bird, I never obtained a specimen. 



9. Archibuteo sancti-johannis. Head, feet, and wings 

 preserved, and three eggs obtained by M. Bourgeau : wing 18 in. 

 long. Saskatchewan Plains, summer of 1858. The eggs are 

 white, with slight blotches of red : rather more spherical than 

 those of A. ferrugineus. 



10. Archibuteo ferrugineus. $ No. 86. Between north 

 and south branches of Saskatchewan River, April 30th, 1858. 

 Length 26| in., wing 18|, tail 9^. Eye brown-hazel, feet and 

 cere yellow, bill dark horn-colour. Remains of Ground-Squirrel 

 in stomach. 



The eggs taken from the nest of No. 86 were four in number. 

 The nest, which was placed in an aspen tree, 20 feet from the 

 ground, was composed of sticks, 2g feet across, and lined with 

 buffalo wool. Those taken from another nest near the same 



