224 Trans. Acad. Sci. of St. Louis. 



It is easy of approach and, on being disturbed, instead of taking 

 wing will usually dive, hence the vernacular name Hell Diver. 



The nest has never been found in Jackson County, but pairs of 

 birds have remained all summer on Mill Creek, north of Inde- 

 pendence (Bush), on Fish Lake, and on the lower Blue River. 

 A nearly full grown young bird was seen at the mouth of Blue 

 on June 13, 1916. 



Suborder Cepphi. Loons and Auks. 

 Family GAVIIDAE. Loons. 



G-AVIA IMMER (Brunnich). Loon. 

 Rare migrant. 



The few available records of this once common migrant indi- 

 cate that it arrives from the north about the middle of October 

 and returns during the first two weeks in April. 



It is observed mainly on the Missouri River, though a speci- 

 men was taken at Lake City on October 10, 1902. It is still oc- 

 casionally taken by duck hunters and a few individuals have 

 been known to winter here during mild and open winters. 



Order LONGIPENNES. Long-winged Swimmers. 

 Family STERCORARIIDAE. Skuas and Jaegers. 



STERCORARIUS POMARINUS (Temminck). Pomarine Jaeger. 

 Accidental visitant. 



A fine specimen of this unlooked-for ocean bird was secured 

 by two duck hunters on the Missouri River near the Eaton Bar 

 on November 28, 1915. The skin is now in the possession of 

 Charles Tindall of Independence, and constitutes the only rec- 

 ord for the state. 



That there might be no question as to the identification, the 

 specimen was forwarded to the Biological Survey at Washing- 

 ton and identified by Dr. H. C. Oberholser. 



STERCORARIUS PARASITICUS (Linn). Parasitic Jaeger. 

 Rare winter visitant. 



The Parasitic Jaeger has been taken several times by duck 

 hunters on the Missouri River, though there are no specimens 

 to substantiate the records. A flock of five were observed at 

 close range near the mouth of the Big Blue River on April 23, 



