BBS Route · Delaware · BCR 30
Bethany Bch Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 100 species recorded across 18 survey years, no longer active.
100Species Recorded
18Years Surveyed
1966–1990Span
4Observers
Bird Species Found on Delaware Bethany Bch
Top 40 of 100 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Laughing Gull | Laridae | 309 | 1990 | 13× | 1970 | |
| Willet | Scolopacidae | 84 | 1990 | +464% | 1969 | |
| Red-winged Blackbird | Icteridae | 77 | 1990 | -20% | 1969 | |
| Common Grackle | Icteridae | 67 | 1990 | -10% | 1969 | |
| Boat-tailed Grackle | Icteridae | 64 | 1990 | +98% | 1969 | |
| Glossy Ibis | Threskiornithidae | 50 | 1989 | +629% | 1973 | |
| American Robin | Turdidae | 45 | 1990 | +147% | 1969 | |
| Barn Swallow | Hirundinidae | 44 | 1990 | +28% | 1969 | |
| Song Sparrow | Passerellidae | 36 | 1990 | +47% | 1969 | |
| European Starling | Sturnidae | 35 | 1990 | -59% | 1969 | |
| Fish Crow | Corvidae | 24 | 1990 | -31% | 1969 | |
| Purple Martin | Hirundinidae | 24 | 1990 | +81% | 1969 | |
| House Finch | Fringillidae | 23 | 1990 | -6% | 1986 | |
| Least Tern | Laridae | 21 | 1990 | -64% | 1969 | |
| Ring-billed Gull | Laridae | 20 | 1967 | +43% | 1966 | |
| Mourning Dove | Columbidae | 20 | 1990 | +207% | 1969 | |
| Osprey | Pandionidae | 16 | 1990 | +141% | 1970 | |
| Mallard | Anatidae | 15 | 1990 | +440% | 1972 | |
| House Sparrow | Passeridae | 13 | 1990 | -89% | 1969 | |
| Herring Gull | Laridae | 12 | 1990 | +30% | 1969 | |
| Northern Mockingbird | Mimidae | 11 | 1990 | -30% | 1969 | |
| Black Skimmer | Laridae | 10 | 1990 | -7% | 1969 | |
| Gray Catbird | Mimidae | 10 | 1990 | +140% | 1969 | |
| Common Yellowthroat | Parulidae | 9 | 1990 | -29% | 1969 | |
| Northern Bobwhite | Odontophoridae | 8 | 1990 | -52% | 1969 | |
| Blue Jay | Corvidae | 8 | 1990 | -44% | 1969 | |
| Brown-headed Cowbird | Icteridae | 8 | 1990 | +83% | 1970 | |
| Chimney Swift | Apodidae | 7 | 1990 | -48% | 1969 | |
| Northern House Wren | Troglodytidae | 7 | 1990 | +113% | 1969 | |
| Green Heron | Ardeidae | 6 | 1990 | +183% | 1970 | |
| Rock Pigeon | Columbidae | 6 | 1990 | +111% | 1969 | |
| Yellow-crowned Night Heron | Ardeidae | 6 | 1989 | n/a | n/a | |
| American Crow | Corvidae | 5 | 1990 | -55% | 1969 | |
| Saltmarsh Sparrow | Passerellidae | 5 | 1966 | n/a | n/a | |
| Red-eyed Vireo | Vireonidae | 5 | 1990 | +33% | 1969 | |
| Carolina Wren | Troglodytidae | 5 | 1990 | +260% | 1975 | |
| Great Egret | Ardeidae | 5 | 1990 | +40% | 1976 | |
| Snowy Egret | Ardeidae | 5 | 1990 | +50% | 1978 | |
| Common Nighthawk | Caprimulgidae | 4 | 1990 | -44% | 1969 | |
| Northern Cardinal | Cardinalidae | 4 | 1990 | +71% | 1969 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.