The eBirdr field guide

Bird Advisor

Describe what you saw. We’ll narrow the field together.

Question 5 5 possible birds

What SIZE was the TAIL ?

Choose the answer that comes closest to what you observed.

Very short Short Medium Long Very Long Unknown

Not completely sure? Choose Unknown when it is available—a careful “I don’t know” is more useful than a guess.

Your observation 4 answers recorded · open to review or change

1
What TYPE of bird was seen ? Swallow-like
Change
2
What colour was the BELLY ? Gray, or blue-gray
Change
3
What SHAPE was the TAIL ? Square or slightly notched at the end
Change
4
WHERE was the bird seen ? Northwestern Canada or United States
Change

Leading possibilities

5 possibilities remain

1 rule inferred

1
Vaux's Swift
Why this matches 4 supporting observations
- What TYPE of bird was seen ? Swallow-like
- What colour was the BELLY ? Gray, or blue-gray
- What SHAPE was the TAIL ? Square or slightly notched at the end
- WHERE was the bird seen ? Northwestern Canada or United States
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2
Chimney Swift
Why this matches 4 supporting observations
- What TYPE of bird was seen ? Swallow-like
- What colour was the BELLY ? Gray, or blue-gray
- What SHAPE was the TAIL ? Square or slightly notched at the end
- WHERE was the bird seen ? Northwestern Canada or United States
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3
Black Swift
Why this matches 3 supporting observations
- What TYPE of bird was seen ? Swallow-like
- What colour was the BELLY ? Gray, or blue-gray
- WHERE was the bird seen ? Northwestern Canada or United States
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4
Common Nighthawk
Why this matches 2 supporting observations
- What TYPE of bird was seen ? Swallow-like
- What SHAPE was the TAIL ? Square or slightly notched at the end
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5
Purple Martin
Why this matches 2 supporting observations
- What TYPE of bird was seen ? Swallow-like
- What colour was the BELLY ? Gray, or blue-gray
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Showing the strongest matches so far. Keep answering—the order may change.