REPORT OX BIRD CENSUSES, 1916 



25 



has been a great variation in the kinds of birds found each year. 

 Of the 55 species that nested here in the six years, only 10 were 

 present every year, while 21 were present only one year each. Since 

 we have no other series with which to compare this, it is impossible to 

 tell whether this extreme variability is characteristic of marshland or 

 whether it is due to local conditions. (See Table 8.) 



Table 8. — Birds n< > sting on 19 acres near Whiting, Ind., including 10 acres of marshland. 



species. 



Black tern 



rLesser scaup 



American bittern 



Least bittern 



+Green heron 



t King rail 



Sora 



t Florida jraliinule 



Woodcock 



♦Spotted sandpiper 



Killdeer 



Mourning dove 



+Marsh ha'wk 



tSparrow hawk 



Yellow-billed cuckoo 



Black-billed cuckoo 



t Kingfisher 



t Red-headed woodpecker 



Northern flicker 



tXighthawk 



i-Ruby-throated hummingbird. 



Kingbird 



Crested flycatcher 



Wood pewee 



Least flycatcher 



jBlue jav 



Crow 



♦Bobolink 



*Cowbird 



*Red- winged blackbird 



♦Meadowlark 



Bronzed grackle 



Goldfinch 



Grasshopper sparrow 



Field sparrow 



♦Song sparrow 



tSwamp sparrow 



-i-Towhee 



+Scarlet tanaser 



tBarn swallow 



♦Tree swallow 



tCedar wax wing 



+Black and white warbler 



^Yellow warbler 



tOvenbird 



Maryland yellowthroat 



tRedslart 



♦Catbird 



*Brown thrasher 



House wren 



f Short-billed marsh wren 



Long-billed marsh wren 



Tllermi t thrush 



Robin 



English sparrow 



* Present every vear. 



1914 



191o 1916 1917 



1918 



t Present only one year. 



16 



1919 



19 



Total number of species 



Total number of nesting pairs 







M 



38 

 115 



112 



99 



24 

 109 



H 



120 



The second series of counts was made by C. J. Pennock on 82 acres 

 about the village of St. Marks. Fla., situated on the St. Marks River, 

 8 miles from the Gulf of Mexico. A roadway and a railroad track about 

 bisect the area, and along these are 25 buildings, two-thirds of which 

 are dwellings. A few buildings are on the river bank. Onlv 2 acres 



