GEOIvOGY OF LA SALIvE COUNTY. 77 



Up and down trees. He is ashy blue above, white 

 below; crown and nape black; middle tail feathers blue, 

 others black, blotched with ^Yhite; female less or no 

 black on head. 



Red-bellied Nuthatch — S. Canadensis — Ashy blue 

 above, brighter than the preceding-, rusty brown 

 below, g-lossy black, male; bluish, female. 



Famil}^ Certhidse — Creepers — Brown creeper — 

 Certhia familiar is — -dark brown, much barred and 

 striped; rump tawn}^; tail feathers pointed, shafts 

 stiff, much like those of the woodpecker. 



Famil V Trog-lodytidae - - Wrens — House wren — 

 Trog-lodytes sedon — common about houses. 



Family Sylvicolidae — Warblers — Blue, yellow 

 backed warbler — Chloris Americana — clear ashy blue, 

 with a larg-e g-olden g-reen patch on back, yellow below; 

 belly white. 



Summer Warbler— Dendroeca sestiva — back olive 

 3^ellow; breast and sides g-olden yellow, with orang-e 

 brown streaks. 



Yellow Rumped Warbler, Myrtle Warbler— Den- 

 droeca coronata— bluish ash above with black streaks; 

 white below with large black streaks; crown, rump 

 and sides of breast brig-ht 3^ellow. 



Water Wag-tail, Water Thrush — Siurus nevius — 

 dark olive brown above, yellowish beneath, thickly 

 spotted with brown. 



Family Tanag-ridae — Tanagers — Summer red bird 

 — Pyranga aestiva — red wings a little dusky. Not 

 common. 



Famil V Herundineda^ — Swallows — Bar» swallow 

 Chilidon erythrogastra. Common about barns. 



Cliff Swallow — Petrochelidon lunifrons — a blue 

 spot on breast, whitish below. Builds nests in cliffs 

 along Illinois, also under eaves of barns. 



