448 
List oF SPECIES RECOGNIZED WITH THEIR CLASSIFICATION, ETC.—Concluded 
SSS 
Residence Southern | Central | Northern 
classification Illinois Illinois Illinois 
3 Q oe 3 nm tM Me be 
23 (so | 3S jule| [sm el [Sloe] 18 
SS je8 | 54 fElels| Se] SlSlSlslelsie 
An OF | ZR Aaa |S A Aale|Aale |= 
757. Gray-cheeked Thrush 
Hylocichla aliciae 
aliciae M M M J 
758a. Olive-backed Thrush 
Hylocichla ustulata ; 
swainsoni M M M xX! +X 
759b. Hermit Thrush 
Hylocichla guttata 
pallasi WwW M M x 
761. Robin 
Planesticus migratorius 
migratorius P. S) SS) X| X} XX) XX). | XM XI 
766. Bluebird 
Sialia sialis sialis id s NS) X| XK] XK KI |XX 
EXAMPLES OF Fretp Notes, INDEX Carps, AND PriINncIPAL TABLES 
Mabe up FRoM THEM. 
FIELD NOTES 
The following copies of four note slips will sufficiently illustrate 
the method of recording the field data. The number following the date 
at the head of the slip, is the serial number of the slip itself. The figures 
opposite the names of habitats (“pasture”, “stubble”, “corn stalks”, 
etc.) show the number of paces taken in crossing a field, the observer 
counting the birds on a 50-yard strip except where the habitat name is 
followed by the expression “30 yards”. The number and kinds of birds 
seen in each field on the 50-yard or 30-yard strip are shown by the 
figures under the habitat name, the first the number of birds and the 
second the A. O. U. number for the species name.* (8-289 means 8 
bob-whites or quails seen in crossing a pasture 310 paces wide.) 
Feb. 14, 1907 507 (Broken trees) 
Brownfield, Illinois 13-567 
Fair, cold, wind N. E. Weeds 34 
Ground not frozen. 8:00 A. M. 30 yd. 
Pasture 310 
8-289 Feb. 14, 1907 508 
Stubble 80 C. Stalks <0 93 
1-567 8-501 : 
Pasture 92 24-567 
* The symbol X is used for the English sparrow. 
