149 



Marbled Murrelets occur year round from southeast Alaska to central 

 California and during fall and winter to southern California. Kittlitz's 

 Murrelets occur year round, where ice free waters exist, from the Bering 

 Strait to southeast Alaska (one extralimital record from San Diego). 

 Ancient Murrelets occur year round from the southern Bering Sea to British 

 Columbia, and during the winter to northern Baja California. Any 

 specimens of Marbled Murrelet south of the Channel Islands, or of 

 Kittlitz's Murrelet south of southeast Alaska, should be saved for 

 verification. 



XANTUS 1 MURRELET (Endomyahura hypoleuea; choice 19', pg. 70) and 

 CRAVERI'S MURRELET (E . eraveri; choice 23', pg. 71). Of the five murrelets 

 these two are the most plainly marked. They closely resemble the murres, 

 except in size; compare Figs. 25 and 26. Chicks accompany adults to sea 

 when only a few days old and when feathered only in down. The above 

 table of measurements may aid in identification, but be wary of the 

 fact that only adults are included. 



The Xantus 1 Murrelet may be found year round in Baja California and 

 southern California waters. During early spring and late summer they 

 occur as far north as Washington but in any abundance only as far north 

 as central California. The occurrence of Craveri's Murrelet is quite 

 similar to the Xantus' but the Craveri's Murrelet is less abundant along 

 the Pacific coast than the other. Any specimen of Xantus' Murrelet north 

 of central California and of Craveri's Murrelet north of Pt. Conception 

 should certainly be saved for verification. 



CASSIN'S AUKLET (Ptyohoramphus aleuticus; choice 22, pg. 70 ). Little 

 more can be added than what is in the keys to aid in distinguishing the 

 five auklets. One should have little difficulty in doing so, unless the 

 specimen is headless. The following table (based mostly on Ridgway, 1919) 

 may at times be useful (measurements in mm), but consider the fact that 

 first year auklets (measurements not in table) are slightly smaller than 

 adults: 



AUKLETS 

 Cassin's Parakeet Crested Least Whiskered 



Wing 109-129 140-156 125-145 88-98 103-118 



Tarsus 23-25 26-31 24-30 16-20 19-24 

 Exposed 



Culmen 18-20 13-17 10-14 7-10 7-10 



Cassin's Auklet is the most widely distributed of the five auklets. 

 It occurs year round from islands off the Alaska Peninsula south to central 

 Baja California. Any specimens from the Bering Sea should be saved for 

 verification. 



