36 REPORT OF NEW JERSEY STATE MUSEUM. 



KEY FOR THE IDENTIFICATION OF NEW JERSEY BIRDS. 



All terms are explained in the Glossary at the end of the volume. All measure- 

 ments are given in inches and hundredths expressed in decimal form. In the descrip- 

 tions of species only such plumages are given as are worn during the period of the 

 year at which the bird occurs in New Jersey. Nests and eggs are only described 

 when the bird breeds or formerly bred in the State. 



a. Hind toe connected with the inner toe by a web. STEGANOPODES, p. 70 



aa. Hind toe not connected by a web (sometimes entirely absent). 



6. Nostrils tubular. TUBINARES, Petrels, p. 66 



66. Nostrils not tubular. 



c. Edges of the bill with a series of teeth or lamellae. 



ANSERES, Ducks, etc., p. 74 

 cc. Edges of bill not fringed with lamellae. 



d. Forward toes conspicuously flat and lobed 



on the side ; claws also flat. COLYMBID.E, Grebes, p. 38 



dd. Toes and Claws not flat. 



e. Three forward toes webbed to the tips. 



/. No hind toe. ALCIDJE, Auks, etc , p. 43 



ff. Hind toe present. 



g. Bill with upper mandible rounded or curved at tip. 

 LARIN.JS, Gulls, and STERCORARIID^E, Skuas, 



pp. 49 and 47 

 gg. Bill sharp pointed. 



h. Tarsus conspicuously compressed. 



GAVIID^E, Loons, p. 41 



hh. Tarsus not flat. STERNIN^E, Terns, p. 50 



ggg. Bill compressed, knife like ; upper mandible 



shorter than lower. RYNCHOPID^E, Skimmer, p. 65 



ee. Forward toes not fully webbed. 

 f. Lower part of thigh naked. 



g. Hind toe well developed and on a level with the others. 

 h. Lores or eye region naked. 



ARDEIDJS, Herons, etc., p. 98 

 hh. Lores and eye region feathered. 



RALLIED, Eails, etc , p. 109 

 gg. Hind toe small and elevated above the others. 



h. Lores and eye region naked. GRUS, Cranes, p. 108 

 hh. Lores and eye region feathered. 



/'. Middle toe and claw nearly equal to tarsus. 



RALLIED, Rails, etc., p. 109 



ii. Middle toe and claw distinctly shorter than tarsus. 

 j. Tarsus over 3.50. 



RECCRVIROSTRIDJS, Stilts and Avocets, p. 120 

 jj. Tarsus under 3.50. 



k. Sides of toes with lobes. 



PHALAROPID^E, Phalaropes, p. 117 

 kk. Sides of toes without lobes. 



SCOLOPACID^E, Snipe, p. 122 

 ggg. No hind toe. 



h. Bill under 2. 



CHARADIID^E, Plovers (also ARENARIA,P. 147), p. 142 

 hh. Bill ov r 2. H^EM ATOPODID^E, Oyster-catchers, p. 148 



