NO. 9 BIRDS OF ISLA COIBA, PANAMA—WETMORE OI 
DENDROICA PETECHIA AMNICOLA Batchelder 
Dendroica aestiva amnicola BATCHELDER, Proc. New England Zo6l. Club, vol. 6, 
Feb. 6, 1918, p. 82. (Curslet, Newfoundland.) 
The two secured were shot January 16 and 27. The present form 
is distinguished by darker color, particularly on the back. 
DENDROICA PENSYLVANICA (Linnaeus): Chestnut-sided Warbler, 
Reinita de Lados Castafios 
Motacilla pensylvanica LiNNAEUuS, Systema naturae, ed. 12, vol. 1, 1766, p. 333. 
(Philadelphia, Pa.) 
Specimens of this warbler were taken January 12 and 29. No 
others were identified. 
SEIURUS NOVEBORACENSIS NOTABILIS Ridgway: Northern 
Waterthrush, Pizpita Mangletera 
Seiurus naevius notabilis Ripcway, Proc. U. S. Nat. Mus., vol. 3, 1880, p. 12. 
(Como Lake, Carbon County, Wyo.) 
Waterthrushes ranged singly among the mangroves near the river 
mouths, and in the low shrubbery in the swampy areas adjacent at 
high tide when much of their usual range was covered with water. 
Their habit is to walk quickly along the ground with rapidly vibrating 
tail, When alarmed they call with a sharp note, and when flushed 
often light on logs or low branches, still continuing the nervous tail 
movement. It is this motion that brings them to attention as the 
dark dorsal surface matches the background over which they range. 
The seven specimens taken from January 8 to 28 are all of this 
northern and western race. 
OPORORNIS FORMOSUS (Wilson): Kentucky Warbler, Reinita Hermosa 
Sylvia formosa Witson, American ornithology, vol. 3, 1811, p. 85, pl. 25, fig. 3. 
(Kentucky. ) 
On January 19 I shot a female in low undergrowth along the 
Punta Damas trail. 
SETOPHAGA RUTICILLA RUTICILLA (Linnaeus): American Redstart, 
Candelita 
Motacilla Ruticilla Linnarus, Systema naturae, ed. 10, vol. 1, 1758, p. 186. 
( Virginia.) 
Occasional individuals of this migrant were seen in high forest, 
moving about as actively as when in their northern nesting grounds. 
The bright patches of color in the tail and wings, yellow in females, 
