FA.MILY ALCID.E. AUKS, PUFFINS, AND MUUKES. 



31 



Group 3. Wing, 6.50 to 7.50 inches long. 



^ 



Bill, parrot like; underparts, white; back, l)lacU, usually a blaol: 

 collar. Fniterciila arctica, andracrs. Puffin. Sea Parrot, 



See No. 9. 



Adult in smnmcr: General plumage, black; a white patch on 

 the shoulder; basal half of the greater wing coverts (feathers 

 forming the white patcli on the shoulder), black. \Viuter Ijirda 

 have the uuderparts white, and the upper plumage, mixed black, 

 gray, and white. Gepplms grylle. Black Quillemot. 



See No. 11. . 





Siniikar to the Black Guillemot, but has tlie wing coverts entirely white and uot with 

 basal half black. Ciqiphua mandtii. Mandt's Guillemot. 



See No. 12. 



Summer plumniiK : Head, back, wings, and tail, sooty brown ; uuderparts and tips of secon- 

 daries, white. Wilder plumage: Uuderparts, white, more or less marked witli sooty brown, 

 or blackish about the throat, belly, aud flanks. Uria lomvia. Brunnich's Murre. 



See No. 14. 



Summer plmnniie : Head and neck, Ijack, wings, and tail, black; tips of 

 secondaries and rest of uuderparts, white. WhUer phnuage : Similar, Ijut 

 has the throat white. Alca turda. Razor=billed Auk. 



See No. 1.5. 



* Group 4. Wing, 7.50 to 8.50 inches long. 



Summer plumage: Head aud neck, back, wings, aud tail, black. Tips of secondaries .and 

 vest of uuderparts,' white. Alca tonla. Razor=billed Auk. 



See No. 1.5. 



Summer plumage : Head, l)ack, wings, and tail, dark sooty brown; iindm-parts and tips of 

 secondaries, white. Winter plumage: Uuderparts, white, moi-e or less marked with sooty 

 brown or blackish about the throat, belly, and Hanks; bill, usually ov(,'r 1.60. 



Uria troile. Murre. 

 See No. 1:^. 



Similar to Uria troile, but has the head darker than the throat; liill, usually under 1.6(1. 



Uria lum.eia. Brunnich's Murre. 



See No. 14. 



* For directions for measurement, see page '■ 



