| Species | Earliest Date of Arrival | Average Date of Arrival | Average Date Last Seen | Latest Date Seen | Number of Days Seen | Number of Years Seen |
|---|---|---|---|---|---|---|
| Barn Owl Tyto alba |
Apr 18, 1941 Oct 12, 1939 |
(Oct 19, 1928) |
(Oct 28, 1935) |
Oct 29, 1935 |
1 4 |
1 3 |
| Eastern Screech-Owl Megascops asio |
May 10, 1931 | (May 22, 1931) | May 31, 1928 | 3 | 2 | |
| Snowy Owl Bubo scandiacus |
Nov 9, 1936 | (Nov 12, 1937) | Dec 3, 1933 | 7 | 3 | |
| Long-eared Owl Asio otus |
Mar 22, 1938 Oct 22, 1939 |
(Apr 23, 1941) | Apr 24, 1939 | 3 1 |
3 1 |
|
| Short-eared Owl Asio flammeus |
Apr 11, 1938 Aug 17, 1934 |
(Apr 15, 1941) Sep 28 |
(Apr 17, 1942) Nov 4 |
Apr 23, 1943 Nov 20, 1935 |
5 54 |
4 11 |
| Northern Saw-whet Owl Aegolius acadicus |
Apr 9, 1934 | 1 | 1 | |||
| Belted Kingfisher Megaceryle alcyon |
Mar 21, 1943 Aug 1, 1937 |
Apr 1 Aug 6 |
May 21 Oct 18 |
May 31, 1937 Nov 16, 1936 (Dec 22, 1939) |
240 226 |
16 16 |
| Red-headed Woodpecker Melanerpes erythrocephalus |
Apr 20, 1931 Aug 20, 1936 |
Apr 28 Aug 30 |
May 28 Oct 12 |
Jun 2, 1928 Oct 27, 1937 |
366 243 |
16 16 |
| Red-bellied Woodpecker Melanerpes carolinus |
Apr 30, 1932 | Mar 21, 1938 | 2 | 2 | ||
| Yellow-bellied Sapsucker Sphyrapicus varius |
Mar 23, 1929 Sep 7, 1941 |
Apr 1 Sep 15 |
May 4 Oct 18 |
May 25, 1933 Oct 30, 1929 |
258 310 |
15 16 |
| Downy Woodpecker Dryobates pubescens |
Present all year | 313 | 16 | |||
| Hairy Woodpecker Dryobates villosus |
Mar 23, 1935 Sep 30, 1933 |
(May 15, 1937) (Oct 9, 1942) |
(Dec 5, 1929) |
May 22, 1936 Jan 8, 1928 |
3 5 |
3 4 |
| Northern Flicker Colaptes auratus |
Mar 16, 1930 | Mar 28 | Oct 23 | Nov 7, 1934 | 1290 | 16 |
| American Kestrel Falco sparverius |
Mar 22, 1939 Aug 24, 1936 |
Apr 6 Sep 7 |
Nov 11 |
May 26, 1943 Nov 22, 1940 |
10 24 |
8 8 |
| Peregrine Falcon Falco peregrinus |
Sep 19, 1937 | Sep 28 | Oct 14 | Oct 17, 1937 | 11 | 6 |
| Olive-sided Flycatcher Contopus cooperi |
May 13, 1934 Aug 21, 1934 |
May 21 Aug 31 |
May 21 Sep 4 |
May 27, 1937 Sep 13, 1942 |
8 8 |
7 6 |
| Eastern Wood-Pewee Contopus virens |
May 7, 1936 | May 13 | Oct 1 | Oct 11, 1939 | 366 | 16 |
| Yellow-bellied Flycatcher Empidonax flaviventris |
May 7, 1943 Aug 4, 1938 |
May 17 Aug 15 |
May 29 Sep 19 |
Jun 2, 1940 Sep 30, 1930 |
114 125 |
15 15 |
| Alder Flycatcher1 Empidonax traillii |
May 13, 1942 | (May 16, 1943) | (May 26, 1939) | May 31, 1941 | 7 | 4 |
| Least Flycatcher Empidonax minimus |
Apr 29, 1942 Aug 7, 1939 |
May 10 | May 27 (Aug 20, 1936) |
Jun 1, 1940 Aug 21, 1936 |
66 3 |
14 2 |
| Eastern Phoebe Sayornis phoebe |
Mar 16, 1938 Aug 4, 1938 |
Mar 28 Aug 20 |
May 1 Oct 23 |
May 7, 1929 Nov 5, 1931 |
208 220 |
15 16 |
| Great Crested Flycatcher Myiarchus crinitus |
Apr 24, 1937 Aug 19, 1942 |
May 4 Aug 28 |
Jun 26 Sep 9 |
Jun 2, 1940 Sep 24, 1938 |
126 35 |
16 12 |
| Western Kingbird Tyrannus verticalis |
Sep 11, 1942 | 1 | 1 | |||
| Eastern Kingbird Tyrannus tyrannus |
Apr 18, 1940 | May 6 | Aug 31 | Sep 23, 1940 | 228 | 16 |
| Scissor-tailed Flycatcher Tyrannus forficatus |
May 20, 1933 | 1 | 1 | |||
| Loggerhead Shrike Lanius ludovicianus |
Mar 13, 1938 | Mar 30 | Apr 6 | Apr 23, 1939 | 12 | 7 |
| Northern Shrike Lanius borealis |
Oct 25, 1929 | 1 | 1 | |||
| Bell's Vireo Vireo bellii |
Sep 29, 1941 | 1 | 1 | |||
| Yellow-throated Vireo Vireo flavifrons |
Apr 25, 1942 Sep 1, 1930 |
May 5 Sep 9 |
May 19 Sep 13 |
May 28, 1929 Sep 28, 1929 |
14 14 |
6 10 |
| Blue-headed Vireo Vireo solitarius |
Apr 29, 1930 Sep 4, 1942 |
May 8 Sep 14 |
May 23 Oct 7 |
May 31, 1938 Oct 17, 1930 |
62 37 |
13 14 |
| Philadelphia Vireo Vireo philadelphicus |
May 12, 1936 Aug 18, 1941 |
May 19 Sep 9 |
May 27 Sep 24 |
May 31, 1929 Oct 3, 1930 |
66 65 |
15 15 |
| Warbling Vireo Vireo gilvus |
May 2 | May 9 | Sep 5 | Oct 15, 1939 | 67 | 14 |
| Red-eyed Vireo Vireo olivaceus |
Apr 23, 1941 | May 14 | Oct 4 | Oct 24, 1928 | 367 | 16 |
| Blue Jay Cyanocitta cristata |
Mar 26, 1936 | Apr 26 | Oct 17 | Dec 15, 1939 | 517 | 16 |
| American Crow Corvus brachyrhynchos |
Mar 3, 1937 Aug 25, 1940 |
Mar 13 Sep 1 |
May 4 Oct 28 |
Jun 2, 1940 Nov 12, 1940 |
96 57 |
15 5 |
| "Northern" Horned Lark2 Eremophila alpestris alpestris |
Apr 4, 1940 Sep 20, 1938 |
(Apr 24, 1939) Oct 3 |
(May 1, 1936) Nov 22 |
May 29, 1942 Dec 5, 1939 |
4 27 |
4 8 |
| "Prairie" Horned Lark3 Eremophila a. praticola |
Mar 3, 1942 Aug 4, 1936 |
Mar 14 Oct 10 |
May 23 Oct 29 |
May 30, 1938 Dec 5, 1939 |
101 35 |
10 11 |
| Purple Martin Progne subis |
Apr 2, 1933 | Apr 11 | Sep 10 | Sep 24, 1939 | 951 | 16 |
| Tree Swallow Tachycineta bicolor |
Apr 9, 1934 Aug 12, 1936 |
Apr 25 (Aug 19, 1942) |
May 15 (Aug 31, 1940) |
May 31, 1937 Oct 25, 1929 |
61 8 |
15 4 |
| Northern Rough-winged Swallow Stelgidopteryx serripennis |
May 11, 1935 | (May 19, 1942) | (May 19, 1929) | May 20, 1929 | 4 | 3 |
| Bank Swallow Riparia riparia |
Apr 28, 1933 Aug 16, 1935 |
May 9 | May 21 | May 28, 1932 Aug 31, 1940 |
14 2 |
5 2 |
| Cliff Swallow Petrochelidon pyrrhonota |
Apr 30, 1938 Aug 22, 1939 |
May 11 (Sep 11, 1940) |
May 15 (Sep 16, 1937) |
May 25, 1940 Oct 24, 1935 |
8 6 |
6 5 |
| Barn Swallow Hirundo rustica |
Apr 16, 1940 Aug 1, 1934 |
Apr 26 Aug 7 |
May 26 Aug 24 |
Jun 2, 1940 Sep 16, 1937 |
213 27 |
16 11 |
| Black-capped Chickadee Poecile atricapillus |
Feb 27, 1929 Oct 11, 1941 |
Mar 23 (Oct 23, 1942) |
Apr 29 (Nov 3, 1933) |
May 2, 1930 Dec 11, 1928 |
28 21 |
5 4 |
| Tufted Titmouse Baeolophus bicolor |
Aug 10, 1937 | (Oct 24, 1933) | Oct 27, 1939 | 3 | 3 | |
| Red-breasted Nuthatch Sitta canadensis |
Apr 25, 1932 Aug 28, 1941 |
May 1 Sep 16 |
May 18 Oct 24 |
May 27, 1943 Nov 8, 1928 |
62 81 |
11 15 |
| White-breasted Nuthatch Sitta carolinensis |
Feb 19, 1930 Oct 2, 1940 |
(Apr 11, 1933) (Oct 8, 1939) |
(Apr 18, 1934) (Oct 30, 1933) |
Apr 28, 1930 Dec 31, 1929 |
17 11 |
4 5 |
| Brown Creeper Certhia americana |
Mar 23, 1936 Sep 12, 1937 |
Apr 1 Sep 20 |
May 3 Nov 3 |
May 16, 1933 Nov 17, 1931 |
227 370 |
15 16 |
| House Wren Troglodytes aedon |
Apr 24, 1929 | Apr 29 | Oct 9 | Oct 24, 1939 | 239 | 16 |
| Winter Wren Troglodytes hiemalis |
Apr 8, 1929 Sep 16, 1938 |
Apr 16 Oct 1 |
Apr 23 Oct 25 |
May 21, 1938 Nov 1, 1935 |
12 30 |
9 11 |
| Sedge Wren Cistothorus platensis |
Apr 30, 1936 Aug 12, 1936 |
May 8 Sep 20 |
May 23 Oct 8 |
May 25, 1940 Oct 11, 1934 |
11 19 |
7 11 |
| Marsh Wren Cistothorus palustris |
Apr 22, 1929 Aug 24, 1936 |
May 9 Sep 24 |
May 22 Oct 6 |
May 27, 1931 Oct 24, 1937 |
33 21 |
12 11 |
| Carolina Wren Thryothorus ludovicianus |
Aug 8, 1936 | (Aug 30, 1936) | (Sep 20, 1936) | Oct 24, 1936 | 21 | 1 |
| Bewick's Wren Thryomanes bewickii |
Apr 5, 1943 | (Apr 8, 1929) | (May 6, 1932) | May 12, 1933 | 13 | 4 |
| Species | Earliest Date of Arrival | Average Date of Arrival | Average Date Last Seen | Latest Date Seen | Number of Days Seen | Number of Years Seen |
1Also known as Traill's Flycatcher. in 1973 this complex was split into 2 species, Willow Flycatcher, Empidonax traillii, and Alder Flycatcher, Empidonax alnorum.
2The Horned Lark subspecies that breeds in northeastern Canada and migrates through and winters in the Midwest, including Illinois.
3The Horned Lark subspecies that breeds in the Midwest, including Illinois.