16 NOKTII aMKIITCAN BIKDS. 



fibres, the flowering steins of the Cladonio mosses, lichens, fine strips of 

 bark, etc. 



The egg>=, wliich are foiir or fi\-e in number, exhibit noticeable variations 

 in size, shajie, and shades oi' coloring, bearing some resemblance to tliose 

 of T. uHtnhtnii and to the eggs asserted to be those of T. nanus, l)ut are 

 suificiontly distinct, and are still more so from those of T. alicia: They 

 range in lengtli from .83 to .!)4, with a mean of .88, tlieir mean breadtli 

 is .G6, the maximum .69, and the minimum .03. Tiieir ground color is 

 usually bluisli-green, sometimes liglit blue with hardly a tinge of green, 

 and the sjiots are of a yellowish-brown, or russet -brown, or a mixture of 

 both coloi-s, more or less confluent, with marked variations in tiiis respect. 



Turdus swainsoni, ^ar. ustulatus, Nittall. 



OBEGOK THBUSH. 



Turdus n.i/iilnfun, XiTrAl.L, Man. I, 184fi, HXi (t'oluiiil)ia Itivcr). — Raihd, lairds N. Am. 

 IS.IS, 21,5, pi. Ixx.xi, (if,'. 1. -In. H.-v. Am. I!. IStU, 18. — t'luppKR & .SiiKi.r.v, 

 r. I{. IJc)). XII, II, 1800, 171.— I.'mowAY, Pr. A. N. S. Pliilad. 1869, 127.— 

 Dai, I, k Haxxistkii, Tr. t'liic. Acad. — tViopKii, Birds Vol., 5. 



Sp. Ciiau. Gt'iiera! appearance of /'/.vf wtk.s, Imt with pattern of xirdinsotn ; the bull' 

 orbital rin;^ n.s conspicuous as in latter. The olive above is more brown than in this, and 

 less 3'ellowi.sh than in /uscesreDs, becoming decidedly more rufesecnt on winjjs ami less 

 observably so on tail. Pectoral aspect dillerent from funcesrcnii, the spots narrower and 

 cuneate, .sharply defined, and arranged in loiigitiidinal series ; in color they are a little 

 darker than the crown. Length, 7.oO; wing, .I.","); tail, 3.00; tarsus*, 1.12. 



Had. Pacific Province of United States. Tres ilarias Isl, Guatemala (winter), 

 Itus. S. I. 



This well-marked race is to l)e compared with siniinsoni, not with 

 fiisrcscens, as has generally been done ; the latter, except in shade of 

 colors, it scarcely resembles at all ; still greater evidence that such is its 

 attinity is that the T. vstiiJatus builds its nest on a tree, and lays a spotted 

 egg, like swainsoni, while fKst'csrrus nests on or near the ground, jierhaps 

 never in a tree, and lays a plain blue egg. The song of tlie present bird is 

 also scarcely distinguishable from that of swninsnni. U])on the wliole, we 

 see no reason why this should not be considered as a Pacific Province form 

 of tlie Turdus swainsoni; at least it becomes necessary to do so, after 

 referring to T. jxiUnsi, as geographical races, the T. uuduhoni and T. nanus. 



Hahits. So far as we are aware, this thrush has a very limited distribu- 

 tion, being mainly restricted to the Pacific coast region from California to 

 Alaska in the breeding season, though migrating southward in winter to 

 (ruat.imala. Dr. Keimerly found it in great abundance breeding at Chilo- 

 weyuck Dejiot, July 3, 18")'.!. Dr. (Jooper also found it one of the most 

 abundant of the sununer residents in Washington Territory, arriving there 



