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Seasonal Presence and Relative Frequency of Selected Species

Delaware Birding Highlights

This list summarizes the seasonal presence of selected bird species in Delaware, indicating whether each species occurs year-round, during the breeding season, or during the non-breeding season (winter and migration). Within each seasonal category, species are numbered and ordered from least to most frequently observed in the United States based on eBird frequency data. This ordering reflects how commonly a species has been observed by U.S. birders over time and is used here as a relative priority indicator, not as a measure of local abundance or the likelihood of encountering a species at a specific site or season within Delaware.

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Delaware Birding Highlights

Year-round Residents

  1. Saltmarsh Sparrow

  2. Seaside Sparrow

  3. American Woodcock

  4. Clapper Rail

  5. Northern Bobwhite

  6. American Oystercatcher

  7. Greater Scaup

  8. Brown-headed Nuthatch

  9. Boat-tailed Grackle

  10. American Black Duck

  11. Great Black-backed Gull

Breeding Residents

  1. Black Rail

  2. King Rail

  3. Gull-billed Tern

  4. Chuck-will’s-widow

  5. Black-billed Cuckoo

  6. Piping Plover

  7. Kentucky Warbler

  8. Worm-eating Warbler

  9. Black Skimmer

  10. Louisiana Waterthrush

  11. Prothonotary Warbler

  12. Least Tern

  13. Dickcissel

  14. Hooded Warbler

  15. Prairie Warbler

  16. Willow Flycatcher

  17. Yellow-throated Warbler

  18. Royal Tern

  19. Orchard Oriole

  20. Summer Tanager

  21. Scarlet Tanager

  22. Little Blue Heron

  23. Rose-breasted Grosbeak

  24. Baltimore Oriole

  25. Indigo Bunting

Non-breeding Residents

  1. Dovekie

  2. Manx Shearwater

  3. Black-headed Gull

  4. Great Shearwater

  5. Wilson’s Storm-Petrel

  6. King Eider

  7. Northern Fulmar

  8. Red Phalarope

  9. Nelson’s Sparrow

  10. Razorbill

  11. Sooty Shearwater

  12. Purple Sandpiper

  13. Parasitic Jaeger

  14. Black-legged Kittiwake

  15. Snowy Owl

  16. Great Cormorant

  17. Northern Shrike

  18. Common Murre

  19. Harlequin Duck

  20. Snow Bunting

  21. Sedge Wren

  22. Red-necked Grebe

  23. Rough-legged Hawk

  24. Lesser Black-backed Gull

  25. Black Scoter

  26. White-winged Scoter

  27. Red-throated Loon

  28. Tundra Swan

  29. Common Eider

  30. Long-tailed Duck

  31. Brant

  32. Ruddy Turnstone

  33. Snow Goose

  34. Surf Scoter

  35. Sanderling

  36. American Tree Sparrow

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