REPORT ON BIRD CENSUSES, 1916-1920. 



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 2 1 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 nesting on 19 acres near Whiting, Ind., including 10 acres of marshland. 



Species. 



1914 



1915 



1916 



1917 



1918 



1919 



Black tern 











4' 



10 



fLesser scaup 











1 



American bittern 



1 









1 



Least bittern 





1 



1 







tGreen heron 





1 



i 



fKing rail 







1 



1 



Sora 







1 

 1 



4 



2 



fFlorida sallinule 









Woodcock 



1 

 3 

 2 



1 

 9 

 3 



:::::::j:: ::::i:::::::: 



*Spotted sandiiiper 



4 



2 



1 

 1 



2 



2 



Killdeer 





Mourning dove 



1 



1 









fSparrow hawk 



1 



1 











\ ellow-billed cuckoo 





1 

 1 





1 



Black-billed cuckoo 



1 



2 





fKingflsher 









fRed-headed woodpecker 













Northern flicker 



2 

 1 



1 



1 



1 





tNighthawk 





■fRiihv-thrnntpfl hnTriTningliirrl 











1 



Kingbird 





17 

 3 







2 

 1 



1 



Crested fl vcatcher 





- 1 

 3" 



1 

 1 

 2 





Wood pewee 







Least 11 vcatcher 





5 



3 



fBlue jay 







Crow 









i 



7 

 3 

 30 

 3 

 2 



1 





5 

 3 



25 

 4 

 1 

 2 







6 



4 

 21 

 4 



5 

 7 



25 

 3 

 1 



1 

 2 



6 



*Cowbird 



2 





25 





4 



Bronzed grackle 





Goldfinch 



5 

 2 



1 

 10 



2 



i' 



11 



1 



Grasshopper sparrow 



2 



Field sparrow 









3 



5 



9 



4 



8 



"fSwamp sparrow . 









1 













2 



:::;;::::::::: 







10 

 1 

 1 











'^Tree swallow 



2 



3 



3 



3 



3 







tBlack and white warbler 



1 



14 



1 



1 

 2 



5 

 3 

 3 











io 



14 



11 



16 



18 



■fOvenbird 





Maryland vellowthioat 





2 



2 



2 



3 



tRedstart 









4 

 1 



7 

 2 

 5 

 1 

 12 



5 

 3 

 1 



4 

 2 



1 







2 





2 









Long-billed marsh wren 





1 

 1 

 1 

 2 



7 



8 



16 



fHermit thrush 











1 



1 



1 



1 







English sparrow 





1 











Total number of species 



22 



87 



3S 

 115 



27 

 112 



27 

 99 



24 

 109 



24 



Total number of nesting pairs 



120 







* Present every year. 



t Present only one year. 



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. Only 2 acres 



