617, 
687, 
825, 
1131, 
1295, 
1580, 
1928, 
444- 
1459, 
1472, 
1514, 
1569, 
1591, 
1624, 
1640, 
1649, 
1680, 
1714, 
ale 
1818, 
1829, 
1853, 
1884, 
1909, 
¢ 1947, 
1990, 
631, 
710, 
831, 
1162, 
1343, 
1582, 
2039 
1440, 
1460, 
1475, 
1520, 
1574, 
1597, 
1625, 
1641, 
1667, 
1697, 
1719, 
1775, 
1819, 
1835, 
1859, 
1888, 
1918, 
1960, 
1994, 
450 
642, 
735, 
833, 
1185, 
1488, 
1798, 
1443, 
1462, 
1481, 
1530, 
1580, 
1601, 
1626, 
1642, 
1671, 
1701, 
1734, 
1781, 
1820, 
1842, 
1862, 
1890, 
1932, 
1961, 
2000, 
648, 
739, 
834, 
1198, 
1490, 
1809, 
1447, 
1464, 
1493, 
1545, 
1583, 
1608, 
1628, 
1643, 
1675, 
1702, 
1742, 
1785, 
1824, 
1843, 
1868, 
1895, 
1933, 
1964, 
2016, 
Tasie IIT 
650, 651, 
806, 819, 
848, 849, 
1204, 1220, 
1555, 1570, 
1813, 1856, 
1448, 1454, 
1467, 1471, 
1497, 1515. 
1554, 1565, 
1585, 1590, 
1612, 1614, 
1634, 1636, 
1645, 1648, 
1677, 1679, 
1703, 1704, 
1747, 1751, 
1802, 1812, 
1827, 1828, 
1844, 1845, 
1872, 1876, 
1896, 1904, 
1934, 1944, 
1967, 1980, 
2027. 
NorTHERN ILLINOIS, SEPTEMBER 6-15, 1909 
Most abundant species, 
amounting to 85% of 
whole number identified; with ratios of each number 
to total number of birds. 
Number 
| Ratio to total 
Species of number of birds 
each | Per cent. 
x 1369 34.0 
511b 1321 33.0 
494 428 10.7 
761 105 2.6 
498 100 2.5 
412 84 21 
Total 3407 84.9 
Whole number = 4017 
85% = 3414 
