BBS Route · Iowa · BCR 22
Davis Corner Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 96 species recorded across 39 survey years, still active.
96Species Recorded
39Years Surveyed
1968–2024Span
10Observers
Bird Species Found on Iowa Davis Corner
Top 40 of 96 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Red-winged Blackbird | Icteridae | 356 | 2024 | +399% | 1970 | |
| American Robin | Turdidae | 66 | 2024 | +207% | 1970 | |
| Song Sparrow | Passerellidae | 59 | 2024 | +312% | 1970 | |
| House Sparrow | Passeridae | 54 | 2024 | -4% | 1970 | |
| Killdeer | Charadriidae | 38 | 2024 | +233% | 1970 | |
| Ring-necked Pheasant | Phasianidae | 37 | 2024 | -14% | 1970 | |
| Barn Swallow | Hirundinidae | 33 | 2024 | +236% | 1970 | |
| Common Grackle | Icteridae | 30 | 2024 | -68% | 1970 | |
| Common Yellowthroat | Parulidae | 30 | 2024 | +84% | 1970 | |
| Cliff Swallow | Hirundinidae | 30 | 2024 | 12× | 1980 | |
| European Starling | Sturnidae | 28 | 2024 | -15% | 1970 | |
| Mourning Dove | Columbidae | 25 | 2024 | +95% | 1970 | |
| Northern House Wren | Troglodytidae | 21 | 2024 | +163% | 1970 | |
| American Crow | Corvidae | 16 | 2024 | -23% | 1970 | |
| Brown-headed Cowbird | Icteridae | 15 | 2024 | +333% | 1970 | |
| Dickcissel | Cardinalidae | 15 | 2024 | +87% | 1970 | |
| Northern Rough-winged Swallow | Hirundinidae | 12 | 2003 | +50% | 1977 | |
| American Goldfinch | Fringillidae | 11 | 2024 | +94% | 1970 | |
| Horned Lark | Alaudidae | 10 | 2024 | -9% | 1970 | |
| Blue Jay | Corvidae | 10 | 2024 | +6% | 1970 | |
| Northern Cardinal | Cardinalidae | 9 | 2024 | +633% | 1972 | |
| Chipping Sparrow | Passerellidae | 9 | 2024 | +667% | 1974 | |
| Bobolink | Icteridae | 7 | 2024 | -76% | 1970 | |
| Sedge Wren | Troglodytidae | 7 | 2024 | +67% | 1972 | |
| Rock Pigeon | Columbidae | 6 | 2024 | -77% | 1970 | |
| Purple Martin | Hirundinidae | 6 | 1988 | +167% | 1971 | |
| Gray Catbird | Mimidae | 6 | 2024 | +167% | 1971 | |
| Brown Thrasher | Mimidae | 6 | 2024 | +55% | 1971 | |
| Tree Swallow | Hirundinidae | 6 | 2019 | +233% | 1992 | |
| Indigo Bunting | Cardinalidae | 5 | 2024 | +433% | 1971 | |
| Willow Flycatcher | Tyrannidae | 5 | 2024 | +40% | 1981 | |
| Red-bellied Woodpecker | Picidae | 4 | 2023 | +167% | 1981 | |
| Black-capped Chickadee | Paridae | 4 | 2021 | +100% | 1984 | |
| Eurasian Collared-Dove | Columbidae | 4 | 2024 | +150% | 2017 | |
| Vesper Sparrow | Passerellidae | 3 | 2024 | -64% | 1970 | |
| Green Heron | Ardeidae | 3 | 2005 | +67% | 1980 | |
| Warbling Vireo | Vireonidae | 3 | 2024 | +100% | 1981 | |
| Yellow Warbler | Parulidae | 3 | 2023 | +67% | 1989 | |
| Mallard | Anatidae | 3 | 2005 | +50% | 1990 | |
| Upland Sandpiper | Scolopacidae | 2 | 2018 | -71% | 1971 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.