42 LH ee SAS DUB TOsNe Bi ol ee balay 
Continued Avian Census at 
McGraw Wildlife Foundation, Dundee 
by S. TENISON DILLON, Staff Biologist 
Bird population and habitat information have been given in other ILLINOIS 
AUDUBON BULLETIN articles (Dillon, 1968, 1970 and 1971). The present 
paper is a continuation of the 1971 article, providing additional species seen 
during the calendar years of 1971 and 1972 with similar data (Table 1). Total 
annual numbers have not been given except for 1967, the first weekly 
census year. 
These numbers will provide a species proportion, but will have little 
additional significance because, with the exception of two units, the areas 
censused have been selected with ease of access in mind and show no 
monthly periodicity. Two units—a wooded roadway and an open area — 
have been censused twice every month throughout the last five years. The 
total species numbers for these units, as well as other selected areas, will 
be presented in a later paper. 
Roughly one-third of the species in Table 1 are not unusual at the time 
of year seen, and/or at the Foundation’s location (Smith, 1958). The rest are 
somewhat irregular both as to time, location, or a combination of these 
Table 1. New Avian Species Noted on the 'cGraw Property in the Calendar Years 1971-1972. 
Date First No, at lst 
Species Seen Encounter Area Remarks 
Swan, Whistling 3/13/71 3 Central Moving north, Islands 
Merganser, llooded 3/15/71 3 Fox River - 
Merlin (pigeon hawk) Ly PAT) 1 Agricultural Milk Pail Road 
Sandpiper, Pectoral 4/20/71 SO Central 
Vireo, White-eved 5/16/71 1 Central Slow Creek 
Duck, Shoveller y/ 7p 4 Central Eichler Lake 
Flycatcher, Acadian 7/6/71 il Fox River Railroad Tracks 
Goose, Snow and Blue 10/71 Many Central The Woods 
Duck, Ruddy 10/71 1 Central West Lakes 
Shrike, Northern V2) 20 Vera 1 Central The Orchard 
Grosbeak, Pine 2/ 6/72 1 Central The South End 
Duck, Gadwall 2/29/72 il Central South end - Trout Stream 
Kingbird, Western (Arkansas) 7/18/72 1 Central Found dead 
Sparrow, Grasshopper 10/10/72 at Agricultural Milk Pail Road 
Duck, Canvasback 11/19/72 2 (AD. Central Eichler Lake 
Dre) 
