Key to Mystery of the Missing Migrants, 1990

1. Whip-poor-will 2. Blackpoll Warbler (male) 3. Philadelphia Vireo 4. Black-throated Green Warbler 5. Tennessee Warbler 6. Scarlet Tanager 7. Blue-winged Warbler 8. Golden-cheeked Warbler 9. Yellow-billed Cuckoo 10. Yellow-throated Warbler 11. Bay-breasted Warbler 12. Blue-gray Gnatcatcher 13. Acadian Flycatcher 14. Townsend's Warbler 15. Yellow-bellied Sapsucker 16. Worm-eating Warbler 17. Redstart 18. Red-eyed Vireo 19. Great Crested Flycatcher 20. Golden-winged Warbler 21. Eastern Pewee 22. Cape May Warbler 23. Black-and-white Warbler 24. Prothonotary Warbler 25. Wood Thrush 26. Broad-winged Hawk 27. Canada Warbler 28. Cerulean Warbler 29. Northern Parula Warbler 30. Blackburnian Warbler 31. Gray-cheeked Thrush 32. Swainson's Thrush 33. Swainson's Warbler 34. Blackpoll Warbler (female) 35. Magnolia Warbler 36. Swallow-tailed Kite 37. Northern Oriole 38. Ruby-throated Hummingbird 39. Hooded Warbler 40. Chestnut-sided Warbler 41. Bachman's Warbler 42. Kentucky Warbler 43. Northern Waterthrush 44. Veery 45. Black-throated Gray Warbler