KEY TO THE EGGS 



OF THE SUMMER-RESIDENT BIRDS OF OHIO. 



EGGS PLAIN— (I.) EGGS MARKED -(II. 



I.-EGGS PLAIN. 



Shell -white or -whitish,— A. 



Shell blue or bluish, or green or greenish,— ^B. 



Shell neither white or^A^hitish, nor blue or bluish, or green or greenish,— C. 



A— SHELL WHITE OR WHITISH. 



No 



n 



Size of Eggs 

 ill Shori- 

 diameter. 



1.80 to 2.10 



1.52 to 1.70 

 1.21 to 1.30 



MS to 1.25 

 1.15 to 1.25 



].ll to 1.30 



.98 to l.OS 

 1.00 to 1.06 



.93 to 1.05 



.72 to .92 



.79 to .90 



.79 to .S9 



.70 to .78 

 .68 to .75 



.57 to .67 



.62 to .74 

 .52 to .62 

 .49 to .55 



Size of Eggs 

 in Long- 

 diameter. 



2.17 to 2.30 



1.87 to 2.0-1 

 1.58 to 1.80 



1.31 to 1.58 

 1.22 to 1.5S 



1.40 to 1.70 



1.35 to 1.55 

 1.26 to 1.37 



1.13 to 1.30 



1.00 to 1.20 



.93 to 1.19 



I. 05 to 1.15 



.90 to 1.00 

 .87 to 1.05 



.78 to .83 



.90 to 1.02 

 .70 to .80 

 .75 to .85 



Color of Shell. 



White. 



White. 

 White. 



White. 

 White. 



Milk-white to brown- 

 ish or creamy-wliite, 

 often stained by leaves. 



White. 



Clear White. 



Whife. often staineii 

 by grass upon whieb 

 they rest. 



White. 



Glossy White. 



White. 



White. 

 White. 



White. 

 AVhite. 



White, or creamy 

 white. 



White. 



Number 

 in a Set. 



2 or 3 



2 or .■? 



3 to 6 



4 to 6 



4 to 7 



7 to 15 



1 



6 to 7 



12 to .30, 



ormore. 



o 



5 to 9 



4 to 6 



4 to 6 



4 to 6 



4 to 6 



4 to 6 



4 to 5 



4 to 6 



Location, Position, Materials, Size, etc., of Nest. 



English and Latin Name of Bird. 



Usnally (.he e^gs are laid in an old nest of a Ilauk 

 .sionally 'the birds build a nest for chemselve.s in 

 made o'f coarse sticks, weed-stems, etc. Eggs laid 



or in a liollow tree, 

 me Diras ouiia a nest lor tnemseive-s m the fork of a tree. It is 

 made o'f coarse sticks, weed-stems, etc. Eggs laid in Eebruary or March. 



Nest in the hollow of a tree, or i^laeed in a fork similar to the above. Eggs 

 laid in Eebruary or March. 



Nest consists of sticks, grass, etc., an'i is placerl in a trre, a bnsb, upon the 

 ground, or on the top of a stump in retired timber-land. Often a deserted 

 nest of a Crow or Hawk is used, and probably the eggs are sometimes laid 

 in a hollow tree. Eggs in March. 



Nests in hollow trees, ac no great distance from the ground. Old orchard 

 trees favorite sights. Eggs from Februnry to April. 



Eggs laid upon the ground or a little grass, in open, damp, grassy lands. 

 Sometimes they are at the foot of a little bnsli, beside a log, or at times iu a 

 rabbit burrow. Eggs about April. 



Nest of leaves, etc., on the ground beside a log, under a bush, etc., in se- 

 cluded woods, occasionally also in bushy pastures near woods. Eggs from 

 April to September. 



Nest in trees in woods, usually a nunabcr of nests near by each other. JIade 

 of sticks chiefly. 



Nest at the end of burrow in a bank, usually the bank of a river or creek. 

 Commonly bones of minnows and crawfish in the nest. Eggs last of May 

 and June. 



Nest on the ground in open liehls. sometimes in woods, made of grns^, etc., 

 and generally concealed from view by rank vegetation. April c6 July, or 

 later. 



Nest on low limbs of trees and in bushes. Made of sticks, straws, etc.; very 

 shallow. Early in the season, before leaves are out, nest placed on the ground. 

 Eggs April to October. 



Nest in cavity in a dead tree, fence-post, etc., made for the purpose by the 

 birds. Rarely a natural cavity is chosen for the site. Diameter of opening 

 to nest about Bli inches. Eggs in May and June. 



Nest in cavity in adead tree, fence-post, stump, etc., excavated by the birds. 

 Rarely in a natural cavity. Diameter of opening to nest about 1% inches. 

 Eggs rest on chips and laid iu May or June. 



Occfl- Great Horned Owl. 

 Bubo virginianus. 



;round. Eggs rest on 



Nest in holes excavated in dead trees, high above 

 chips and laid in May or June. Scarce. 



Nest in holes excavated in dead trees and stumps, usnally within twenty 

 feet of the ground. Eggs rest on chips and laid in May or June. Diameter 

 of hole at entrance about 2 inches. 



Nest in holes excavated in dead trees and stumps, usually along the bank 

 of some stream, and from three to ten feet from the ground. Eggs rest on 

 cliips and laid in May or June. Diameter of hole at entrance about 13-16 

 inches. 



Nest built in natural cavities iu trees, or, as is now commonly the case, iu 

 bird-boxes erected for the purpose. Eggs laid in June. 



Nest built of mud, moss. etc.. about bridges, deserted cabins, caves, etc., 

 and often fastened to the perpendicular side of a rock or timber. 



Nest basket-like and made of fine twigs glued together and to the support- 

 ing surface by a gummy substance from tire bird's mouth. Situated in hollow 

 trees, chimneys, etc. 



Barred Owl. 

 Strix nebulosa. 



American Long-eared Owl. 

 Asio americanus. 



Little Screech Owl. 

 Scops asio. 



Short-eared Owl. 

 Asio accipitrinus. 



Ruffod Grouse. 

 Bonasa umbellus. 



Passenger Pigeon. 

 Eclopistes migratoria. 



Belted Kingfisher. 

 Ceryle alcyon. 



American Quail. 

 Bob While. 

 Ortyx virginianus. 



Mourning Dove. 

 Zenaidura Carolinensis. 



Yellow-.shafted Flicker. 

 Colaptes auratus. 



Red-headed Woodpecker. 

 Melanerpes erythrocephalus. 



Red-bellied Woodpecker. 

 Centurus carolinus. 



Hairy Woodpecker. 

 Picus villosus. 



Downy Woodpecker. 

 Picus pubescens. 



Purple Martin. 

 Progne purpurea. 



Pewit Flycatcher. 

 Sayornis fuscus. 



Chimney Swift. 

 Cha;tura pelasgica. 



XXXIV 



