220 NORTH AMERICAN FAUNA 61, FISH AND WILDLIFE SERVICE 



Family CINCLIDAE 



Cinclus mexicanus: Dipper 

 Cinclus mexicanus unicolor 



Judging by published records, the dipper occurs from Kodiak 

 and Bristol Bay to Attu Island. Osgood (1904) obtained a speci- 

 men near Lake Clark and one at Cold Bay, and he records five 

 specimens taken by McKay at Mulchatna River. On September 

 5, 1940, Cahalane (1944) saw a northern dipper at Brooks Falls 

 in the Katmai region. The dipper is known to occur on Kodiak 

 Island (Friedmann 1935), and Cahalane saw several on Afognak 

 Island in 1940. 



Gianini (1917) saw one at Stepovak Bay, and his guide con- 

 sidered these birds to be very common in the swift streams in 

 that district. On June 21, 1940, Gabrielson observed the species 

 at Morzhovoi Bay. In 1925, I found several in small streams in 

 the valley below Aghileen Pinnacles. In that same season, 1 was 

 seen at Urilia Bay, Unimak Island, and at False Pass, where 

 Scheffer also saw 1 on September 8, 1938. Eyerdam (1936) has 

 reported the dipper as occurring on Unimak Island and at King 

 Cove. 



Beals and Longworth, in their field report for 1941, sum up 

 the status of the dipper on Unimak Island, saying — 



Common on Unimak Island. Every stream seems to have its quota of these 

 birds and we often found them four and five to the mile of stream. On Sour- 

 dough Flats we enjoyed a concert given by four dippers on the same little 

 bend of the stream. They are well known to everyone on the island. 



According to residents, the dippers winter on Unimak. 



Swarth (1934) reported several specimens from Akutan, where 

 it was considered to be common. 



Dippers have been reported from Unalaska by several ob- 

 servers (Dall, Turner, Bishop, Cahn), and we obtained a speci- 

 men there. 



We did not find the dipper on any island west of Unalaska, 

 though there are many streams that should furnish suitable 

 habitat. Turner (1886) stated that he saw a dipper in a little 

 stream that emptied into Chichagof Harbor, Attu Island ; he did 

 not obtain a specimen. He remarked that it was extremely rare 

 and that few natives had any knowledge of the birds. 



