BIRDS OF NEW YORK STATE 



57 



Junco, Slate-colored (continued) 



Call no. 

 Nu JuS6 Adult on Nest in Tall Lodged Grass. Cranberry lake. 

 (June 28, 1916) Bailey 



Nu JuS8 Junco Driving Nuthatch Away from Feeding Station. 

 (January 1914) Allen 



Nu JuS9 Flock at "Glenside" in Snowstorm. Ithaca. (April 1918) 



Allen 



Glenside is the home of Dr Arthur A. Allen, who has about 

 the house several acres of glens and wooded hillside, a veritable 

 bird retreat, near the campus of Cornell University. This picture 

 illustrates when the birds need to be furnished with food. 



For junco at feeding station with chickadee, see Nu Ci9. 



Killdeer {Oxyechus vociferus) 



The name killdeer is from its call, which can be heard at its 

 first arrival in the spring and night and day throughout its 

 season. A familiar bird in cultivated fields, where it runs about 

 on plowed ground feeding upon many kinds of insects. This bird 

 is now protected and is no longer a game bird. 9-11.5 



Nu Ke2 Adult over Eggs on Plowed Ground. Geneseo. (1910) 



Bailey 



Note how the white rings and black bands, called "ruptive 

 marks," seem to cut the bird into several pieces. Note how the 

 breast feathers are being spread to expose the brood spots and 

 bring them against the eggs. 



Nu Ke3 Nest with Four Eggs. Near Branchport. (July 8, 191S) 



Burtch 



This nest was found by a farmer while cultivating corn. Mr 

 Burtch reports one killdeer that laid a third set of eggs in a corn- 

 field after the first two had been destroyed by the cultivator. 

 Observe the circle of pebbles picked out by the bird in- making 

 the depression into which the eggs are laid. Are the eggs pro- 

 tectively colored? 



Nu Ke4 Female Incubating. Arcade. (1906) R.H.Beebe 



Nu Ke5 Three Young and an Unhatched Egg in Nest. Arcade 



R. H. Becbe 



This is a good example of protective coloration, both in the 

 color pattern and ruptive marks. The young are crouching, the 

 fear instinct developing early in precocial birds. 



