88 BIRDS. 



Orders. PYGOPODES. 

 Fam. COLYMBIDiE. 



373. Colymbus glacialis L. Great Northern Diver. 



Winter visitant, not uncommon, but still not numerous. 

 Most frequent on the coast, but also occurs inland, 

 though rarely. Arrives in September, leaves early in 

 spring. 



374. Colymbus arcticus L. Black-throated Diver. 



Winter visitant, of uncommon occurrence, on the coast and 

 inland. Appears to be rather more frequently observed 

 inland than C. glacialis^ whilst it is much the rarer of the 

 two on the coast 



375. Colymbus septentrionalis L. Red-throated Diver. 



Winter visitant, common on the coast, and regularly appears 

 at that season on many inland waters, but not numerously. 

 May be found off the coast all the year round — probably 

 young of the previous year not breeding. 



Fam. PODICIPITID^. 



376. Podiceps cristatus (Z.). Great Crested Grebe. 



Resident, about half-a-dozen pairs breeding regularly at 

 Hornsea Mere ; the late Mr. Hugh Reid informed Mr. 

 More in 1865 that it occasionally bred in the West Riding. 

 Those nesting at Hornsea retire to the sea and Humber on 

 the approach of severe weather. Also a winter visitant, 

 observed both inland and on the coast, but far from 

 commonly. 



377. Podiceps griseigena (Bodd.). Red-necked Grebe. 



Winter visitant, uncommon, but not unfrequent in severe 

 seasons, when it occurs both on the coast and inland, from 

 September to March. Examples have occurred in almost 

 full summer plumage. 



