BBS Route · Louisiana · BCR 37
Gran Chenier Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 78 species recorded across 9 survey years, no longer active.
78Species Recorded
9Years Surveyed
1967–1982Span
5Observers
Bird Species Found on Louisiana Gran Chenier
Top 40 of 78 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Red-winged Blackbird | Icteridae | 388 | 1982 | +34% | 1971 | |
| Boat-tailed Grackle | Icteridae | 215 | 1982 | +171% | 1971 | |
| Great-tailed Grackle | Icteridae | 148 | 1976 | n/a | n/a | |
| American Coot | Rallidae | 134 | 1971 | 134× | 1970 | |
| Great Egret | Ardeidae | 107 | 1982 | +555% | 1971 | |
| Blue-winged Teal | Anatidae | 102 | 1971 | n/a | n/a | |
| Snowy Egret | Ardeidae | 56 | 1982 | -93% | 1971 | |
| Eastern Meadowlark | Icteridae | 48 | 1982 | -45% | 1971 | |
| House Sparrow | Passeridae | 38 | 1982 | +297% | 1971 | |
| White-faced Ibis | Threskiornithidae | 30 | 1980 | -22% | 1970 | |
| Wood Stork | Ciconiidae | 25 | 1970 | n/a | n/a | |
| Purple Martin | Hirundinidae | 23 | 1982 | +114% | 1971 | |
| Mottled Duck | Anatidae | 20 | 1976 | -64% | 1971 | |
| European Starling | Sturnidae | 18 | 1982 | +40% | 1971 | |
| Willet | Scolopacidae | 17 | 1982 | -19% | 1971 | |
| Green Heron | Ardeidae | 17 | 1982 | -42% | 1973 | |
| Great Blue Heron | Ardeidae | 15 | 1982 | -4% | 1971 | |
| Double-crested Cormorant | Phalacrocoracidae | 14 | 1982 | +600% | 1967 | |
| Northern Cardinal | Cardinalidae | 14 | 1982 | -9% | 1971 | |
| Neotropic Cormorant | Phalacrocoracidae | 11 | 1982 | -91% | 1973 | |
| Common Tern | Laridae | 11 | 1980 | 11× | 1976 | |
| White Ibis | Threskiornithidae | 10 | 1982 | -16% | 1971 | |
| Little Blue Heron | Ardeidae | 9 | 1982 | +38% | 1971 | |
| Common Grackle | Icteridae | 8 | 1981 | +256% | 1975 | |
| Common Nighthawk | Caprimulgidae | 7 | 1982 | -74% | 1971 | |
| Blue Jay | Corvidae | 7 | 1982 | +114% | 1973 | |
| Clapper Rail | Rallidae | 6 | 1982 | +650% | 1980 | |
| Brown-headed Cowbird | Icteridae | 6 | 1980 | +492% | 1973 | |
| Marsh Wren | Troglodytidae | 6 | 1971 | n/a | n/a | |
| Loggerhead Shrike | Laniidae | 5 | 1981 | +70% | 1971 | |
| Northern Mockingbird | Mimidae | 5 | 1982 | -65% | 1971 | |
| Caspian Tern | Laridae | 5 | 1973 | +25% | 1970 | |
| Forster's Tern | Laridae | 5 | 1973 | +150% | 1970 | |
| Mourning Dove | Columbidae | 4 | 1982 | -31% | 1973 | |
| Common Yellowthroat | Parulidae | 4 | 1976 | -71% | 1971 | |
| Ring-billed Gull | Laridae | 4 | 1981 | +300% | 1971 | |
| Fish Crow | Corvidae | 4 | 1980 | +300% | 1973 | |
| Herring Gull | Laridae | 3 | 1975 | n/a | n/a | |
| Royal Tern | Laridae | 3 | 1982 | -40% | 1976 | |
| Least Tern | Laridae | 2 | 1976 | -43% | 1970 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.