GENUS 91. COLYMBUS. DIVER. 



SPECIES C. GLACMLIS. 



GREAT NORTHERN DIVER OR LOON, 



[Plate LXXIV. Fig. 3.] 



Colymbus glacialis, LINN. Syst. ed. 12, torn, i, p. 221, 5. C. immer, 

 Id. p. 222, No. 6.Ind. Orn.p. 799, 1. C. immer Id.p. 800, 2. 

 Le grand Plongeon, Bmss. \i,p. 105, pi. 10, fig. 1. Le grand 

 Plongeontachete, Id.p. 120, pi. 11, fig. 2. Le grand Plongeon, 

 BUFF. Ois. vni, p. 251. L'Imbrim, ou grand Plongeon de la mer 

 du nord, Id.p. 258, tab. 22. PL Enl. 952. Northern Diver, 

 LATH. Gen. Syn. in, p.37. Imber Diver, Id. p. 340. PENN. 

 Brit.Zool.No. 237, 238. Arct. Zool. No. 439, 440. BEWICK, 

 n, p. 168, 170. MONTAGU, Orn. Vic. Sup.Jlpp. Low, Fauna 

 Orcadensis, p 108, 110. Plongeon Imbrim, TEMM. Man. 

 d'Orn.p. 910. PEALE'S Museum, No. 3262, male and young. 

 3263, female. 



THIS bird in Pennsylvania is migratory. In the autumn it 

 makes its appearance with the various feathered tribes that fre- 

 quent our waters; and when the streams are obstructed with ice, 

 it departs for the southern states.* In the months of March and 

 April it is again seen; and after lingering awhile, it leaves us 

 for the purpose of breeding. The loons are found along the coast 

 as well as in the interior; but in the summer they retire to the 

 fresh water lakes and ponds. We have never heard that they 

 breed in Pennsylvania; but it is said they do in Missibisci pond, 

 near Boston, Massachusetts. The female lays two large brownish 

 eggs. They are commonly seen in pairs, and procure their food, 

 which is fish, in the deepest water of our rivers, diving after it, 

 and continuing under for a length of time. Being a wary bird, 

 it is seldom they are killed, eluding their pursuers by their as- 



* The Loon is said to winter in the Chesapeake Bay. 



