107 
69. Falco islandus (Brunnich). white gyrfalcon. 
Eskimo: Kinowayuk; Kigavik , -vik , ~vit, according to Hantzsch. 
Birds referred to this species were seen in 1923 at Strathcona sound, 
August 19, and Ponds inlet, August 24. Specimens were taken at Black- 
lead island, in Cumberland sound, on August 23 and September 1, 1924. 
During five months spent about Nettilling lake in 1925, this species w r as 
observed eleven times, at localities from Nettilling fiord to the mouth of 
Amadjuak river. One was seen at Pangnirtung fiord on October 6, 1925, 
and another at Amadjuak lake on April 24, 1926. Several specimens were 
shot by Eskimo at Amadjuak bay during the summer of 1926. 
A single individual was seen by Kumlien (1879, p. 81) in Cumberland 
sound in late November, 1877. Hantzsch (1914, pp. 141-142) noted a 
few at Blacklead island late in autumn, 1909, and others as apparently 
breeding near Kangianga in June, 1910. He observed the species once at 
the mouth of Koukjuak river on September 10, 1910. Hesse (1915, pp. 
191-192), reporting on specimens collected by Hantzsch, recorded them 
under Hierofalco gyrfalco candicans (Gm.), and lists one skull labelled by 
Hantzsch as Hierofalco gyrfalco , adult, Blacklead island, Cumberland gulf, 
Baffin island, spring, 1909. 
70. Falco rusticolus gyrfalco Linnaeus, gyrfalcon. 
A very dark-coloured falcon was observed at close range at Blacklead 
island, on August 28, 1924, and is believed to be of this species. A dark 
falcon was also seen at Ponds inlet, August 26, 1923. 
This bird is not listed by either Kumlien or Hantzsch. Hesse (1915, 
p. 122) lists a skull labelled “Hierofalco gyrfalco ” by Hantzsch, but refers 
it to Hierofalco gyrfalco candicans. 
71. Falco peregrinus anatum Bonaparte, duck hawk. 
Eskimo: Kikkeveokjuk; Kigaviarsuk, - suk , -sut, according to Hantzsch. 
This species was not definitely identified while on the 1923 Can- 
adian Arctic Expedition nor during the summer and autumn of 1924 while 
at Cumberland sound. A specimen was collected on June 9, 1925, at 
Nettilling lake near Takuirbing river. On August 10, a pair was seen 
frequenting a cliff at Amittok lake, and on a ledge a nest was found 
containing three half-grown young in the downy stage. The species was 
twice observed at the head of Nettilling fiord in the middle of September, 
1925. On September 27, one was seen in Pangnirtung fiord. Three were 
noted at cape Dorset on June 6, 1926, one at Amadjuak bay on July 29, 
and another in the same locality on August 7. 
Kumlien (1879, p. 82) records the species as a regular breeder in 
Cumberland sound and he took nearly full-fledged young in August in the 
greater Kingwah fiord. Hantzsch (1914, pp. 142-143) first noted the Duck 
hawk on June 6, 1910, at the end of Nettilling fiord where they were said 
by natives to breed every year. A specimen was collected on June 10. 
A female which had eggs on a steep cliff was killed at Amittok lake on 
June 17. The species was many times observed by Hantzsch at Isoa in 
late June. An individual was observed flying westward along Koukjuak 
river on September 15, 1910. Eggs and skins of this species were collected 
by the MacMillan expedition to southwest Baffin island, 1921-22. 
