Vol. XXII"I Bishop, Bird Migration at New Haven, Conn. 373 



here about one quarter to one third of a mile in width, extends 

 northward for about a mile. North of this stretch the Quinni- 

 piac Marshes, almost a mile wide, with the river shrunk to 

 modest proportions. West and north of the harbor, where the 

 city is situated, the land is low and level, with few hills of any 

 height within a mile of the coast. At the eastern entrance to the 

 harbor and for about a mile into the interior the land is also low. 

 There begins a series of parallel ridges of trap and sandstone, with 

 valleys between, running north and south and gradually rising, but 

 frequently broken by transverse valleys. Such a ridge, starting 

 from the harbor at about a mile from its mouth and forming the 

 eastern boundary of the Quinnipiac River where it is widest, extends 

 a mile or more further north and broadens into a small tableland, 

 elevated 150 to 250 feet above the surrounding country. This 

 small, elevated plateau slopes gradually toward the east and south, 

 a somewhat lower ridge parallel to the first extending from the 

 southeastern corner, but descends abruptly on the west to almost 

 the harbor level. Where the trap dyke broadens into the table- 

 land a shallow pass exists, which the removal of the trees at this 

 point has emphasized, this absence of trees giving a clear view of 

 approaching migrants. Near here a wooded valley, lying between 

 the two trap ridges, finds its origin. This point is about six and 

 one half miles slightly east of north of the eastern entrance of the 

 harbor, and about four miles from my home in New Haven, and 

 here at the brink of the steep western slope the following notes 

 were obtained. 



Sept. j, /go-f. — Clear, cool, and calm; temperature 58 at 9 a. m. ; fol- 

 lowing a day that was hot in the morning and cool in the afternoon with 

 wind changing from north to south, after two hot days. Period of obser- 

 vation, 5 : 10 to 7 130 a. m. Many Warblers were heard flying over as I 

 wheeled out and numbers were seen passing all the time I was on the hill, 

 flying north or north-northeast, at 100 to 200 feet from the ground. A 

 few small flocks of Bobolinks passed, flying high, northwest. 



Sept. 6, 1 go 4. — Clear and cool with north wind; 54 at 8 A. M. 5 ; 15 

 to 7 : 30 a. m. Few birds seen ; no migration. 



Sept. 1 j, igo4. — Cloudy and cool with fresh north-northwest wind; 56° 

 at 8 a. M. ; after clear and hot day, following similar weather. 5 : 15 to S 

 a. m. A great warbler migration, a constant succession appearing from 

 the south and southwest and flying north and north-northeast, chiefly low 



