Preliminary List of New Jersey Birds. 73 



(3) Oavia immer — Loon. A rare visitant. A male of this spe- 

 cies was observed at Pompton Lake on April 14, 1912, diving and 

 sw^imming about near the northern end. Only record for the sec- 

 tion. 



(4) Lotus argentatus — Herring Gull. A common spring mi- 

 grant. Rare in autumn and occasional during winter. Numerous 

 spring dates at all of the lakes. Observed but twice during au- 

 tumn : September 30, 1906, and October 2, 1911. Seen on Decem- 

 ber 18 and 28, 1912, over Pompton Lake. 



(5) Mergus americanus — Merganser. Occasional winter and 

 spring visitant. Observed on February 18, 1911 (Wanaque River) ; 

 March 31, 1912 (Pequannock River), and January 5, 1913 (Echo 

 Lake). 



(6) Anas platyrhynchos — Mallard. An irregular visitor. Found 

 nesting at Echo Lake and Mud Pond by Cleveland Cook, of Has- 

 kell, and C. McKinnon, of Butler, at Rotten Pond. Of these three 

 broods the eggs were measured and averaged 2.24" by 1.26", eight, 

 ten and nine, and adult birds observed and positively identified. 



(7) Anas ruiripes tristis — Black Duck. An abundant migrant 

 and occasional winter visitant. A brood of eight with adult fe- 

 male observed at Echo Lake on June 8, 1910. Only record of nest- 

 ing obtained. 



(8) Nettion carolinensis — Green-winged. Teal. A rather irreg- 

 ular migrant. Individuals observed April 14, 1912, and April 10, 

 1913, at Pompton Lake. 



(9) Aix sponsa — Wood Duck. Occasional summer resident. In 

 1903 ten of this species were observed at Echo Lake, and in 1904 

 four more were seen at Greenwood Lake. Since that time they 

 have been rather uncommon, only a few individuals appearing each 

 year. One nest with twelve eggs found at Echo Lake on May 28, 

 1905, and adult female in the close vicinity at finding of this nest. 



(10) Branta canadensis. A regular spring and autumn mi- 

 grant. Arrives in spring, April 10 to 25, and departs in fall from 

 October 15 to December 1. 



(11) Ardea herodias — Great Blue Heron. An occasional visi- 

 tant, especially during April. Recorded at Pompton Lake April, 

 21, 1911, and April 14, 1912. Also two were present at Echo Lake 

 on June 20, 1902. 



(12) Butorides virescens — Green Heron. Abundant summer 

 resident. No nests of this species ever located, but they must cer- 

 tainly breed and nest here, as they are present from April 20 to 

 September 10. 



