BBS Route · Delaware · BCR 30
Wilmington Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 106 species recorded across 42 survey years, no longer active.
106Species Recorded
42Years Surveyed
1966–2014Span
6Observers
Bird Species Found on Delaware Wilmington
Top 40 of 106 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| European Starling | Sturnidae | 167 | 2014 | -24% | 1968 | |
| House Sparrow | Passeridae | 111 | 2014 | -48% | 1968 | |
| Red-winged Blackbird | Icteridae | 35 | 2014 | -74% | 1968 | |
| Northern Cardinal | Cardinalidae | 35 | 2014 | +194% | 1968 | |
| Common Grackle | Icteridae | 33 | 2014 | -67% | 1968 | |
| American Goldfinch | Fringillidae | 23 | 2014 | +40% | 1968 | |
| Mallard | Anatidae | 23 | 2014 | +126% | 1987 | |
| Gray Catbird | Mimidae | 21 | 2014 | +172% | 1968 | |
| American Robin | Turdidae | 20 | 2014 | -40% | 1968 | |
| Tree Swallow | Hirundinidae | 18 | 2014 | 15× | 1987 | |
| Northern Mockingbird | Mimidae | 14 | 2014 | -65% | 1968 | |
| Tufted Titmouse | Paridae | 12 | 2014 | +100% | 1968 | |
| Blue Jay | Corvidae | 11 | 2014 | -11% | 1968 | |
| Cedar Waxwing | Bombycillidae | 11 | 2014 | +300% | 1991 | |
| Rock Pigeon | Columbidae | 10 | 2014 | +26% | 1968 | |
| Mourning Dove | Columbidae | 10 | 2014 | +69% | 1968 | |
| Song Sparrow | Passerellidae | 9 | 2014 | -60% | 1968 | |
| Fish Crow | Corvidae | 8 | 2014 | +933% | 1969 | |
| Carolina Chickadee | Paridae | 8 | 2014 | +87% | 1970 | |
| Canada Goose | Anatidae | 8 | 2013 | +218% | 1990 | |
| Chimney Swift | Apodidae | 7 | 2014 | -43% | 1968 | |
| Carolina Wren | Troglodytidae | 7 | 2014 | +529% | 1970 | |
| Red-eyed Vireo | Vireonidae | 6 | 2014 | +12% | 1968 | |
| Green Heron | Ardeidae | 6 | 2012 | +200% | 1970 | |
| Eastern Kingbird | Tyrannidae | 5 | 2014 | -17% | 1968 | |
| American Crow | Corvidae | 5 | 2014 | -62% | 1968 | |
| Western Cattle-Egret | Ardeidae | 4 | 2013 | -47% | 1969 | |
| Turkey Vulture | Cathartidae | 4 | 2014 | +200% | 1968 | |
| Chipping Sparrow | Passerellidae | 4 | 2014 | +81% | 1968 | |
| Downy Woodpecker | Picidae | 4 | 2014 | +29% | 1970 | |
| Scarlet Tanager | Cardinalidae | 4 | 2006 | +0% | 1973 | |
| House Finch | Fringillidae | 4 | 2014 | -44% | 1985 | |
| Eastern Bluebird | Turdidae | 4 | 2014 | +283% | 2002 | |
| Red-bellied Woodpecker | Picidae | 3 | 2014 | +200% | 1969 | |
| Field Sparrow | Passerellidae | 3 | 2014 | -74% | 1968 | |
| Indigo Bunting | Cardinalidae | 3 | 2014 | -44% | 1968 | |
| Barn Swallow | Hirundinidae | 3 | 2014 | +13% | 1968 | |
| Glossy Ibis | Threskiornithidae | 3 | 2009 | -29% | 1970 | |
| Great Crested Flycatcher | Tyrannidae | 3 | 2014 | +200% | 1969 | |
| Great Blue Heron | Ardeidae | 3 | 2014 | +233% | 1988 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.