F.\l.('().\'S, HAWKS, EAGLES, li'l‘t‘. 197

east of Louisiana. It migrates in floeks, sometimes [lying within gun- shot, and at. others so far above the earth as to be almost beyond the

bounds of vision.

330. Rostrhamus sociabilis t l'ieiUJ. livmmmnn RITE: SKA”.— ll.\\\'K. ml. (5. ~l);trk >l:t[l‘*t'UlUl‘l under. and longer upper tailiem'et‘ts, and base ot' the tail white. tip Ot' the tail whitish; upper mandible mueh length— ened and hooked. 9 and z'mxil‘pper parts hlaek. tipped with rut'ous; under parts barred and mottled with rut'ous, black, and bully; tail as in the At]. 6. 1)., H00; W.,1-t'W; T., 7'75; 1%.,1-20.

{engaillreeds from middle Florida southward to the Argentine lepublie.

Next, in bushes. among reeds or [all grasses. [if/gs, two to three. pale blu- ish white, heavily spotted, blotehed, or washed with cinnamon or ehoeolate, 1‘85 x 1‘47.

This species is a summer resident in southern Florida. It arrives from the south in l“eln‘uar_v. Mr. W. E. 1). Scott writes of it as ob- served at Lake I’anasofkee, Florida: “ Their food at this point appar- ently consists of a kind of large. fresh-water snail, which is very abilit- dant, and the local name of ‘Snail-Hawk’ is particularly applicable to this bird as I have met with it. They fish over the shallow water, reminding one of Gulls in their motions; and having secured a. snail by diving, they immediately carry it to the nearest available perch, where the animal is dexterously taken from the shell without injury to the latter" (Bull. Nutt. Orn. (.‘lub, vi, 1881, p. 16).

331. Circus hudsonius t 1.5mm. Mans-n IIAWK : HARRIER. At]. 5 .— Upper parts gray or ashy; upper tail—eoverts 'u‘lu'te ,' tail silver\ gray, irregu- larly barred or marked with lilaekish; upper breast pearl—gr: " the lower breast and belly white, spotted or barred with rnt‘ous. .iv/. ‘2 .ifpper parts t'useoas. the head and neck streaked. and the \Vlllfist‘lfi't‘rih‘ spotted or margined \vitli rut'ous; longer upper tail~t'o\'erts It'll/iv .‘ middle tail»t'eathcrs barred with ashy and l)l:tel{,otl1et‘s barred with oehraeeousibutt' and black; under parts oehraeeousibull. widely streaked on the breast and narrtm‘ly streaked on the belly with t'useous or light umber. lm.~$imilar to the <2. but somewhat darker above; the under parts darker. almost ruthns: the, belly without. streaks. 5 1... two; “1, 13-75; ’1‘., two; B. from N, no, 9 L, 221a); W.) 1.100; T., tone.

].’rzzt;1¢1.fi.‘\‘«)i~tli America in general, south to Panama.

\Vashington, common \V. \'.. July to .\pl. Sing; Sing. tolerably enmmon S. R, Melt. 6 to (let. 310: a few \vinter. Cambridge. common T. \'., Melt. 15 to .\pl. 13; Sept. and Met: a few breed.

first, on the ground, in marshes. [QM/x, four to six. dull white or pale

bluish whiteV 1‘73 x 1'4”.

This Hawk is essentially a bird of the unwooded Country. and we might as well look for a Grouse in the open marsh as for a Harrier in the thick woods. It flies low, and may be easily identified by the large