FIELD NOTES
Keep the evidence with the observation.
A useful bird note is more than a name. Capture when and where you saw the bird, what it looked and sounded like, and what it was doing. These details make it easier to revisit an uncertain identification with a field guide, photo, or recording later.
A4 field observation record sheet
The one-page sheet is bilingual (English and Chinese), works offline, and can be printed from your browser.
Start with the setting
Write down the date, start time, place or landmark, habitat, and conditions such as wind or rain. Note whether you stayed in one spot, moved along a route, or made an incidental observation. If helpful, record the observation duration or approximate route length. A site name is often enough; avoid publishing exact locations for sensitive birds.
Describe what you actually noticed
For each observation, note the time and an approximate count, then describe shape, size, visible marks or colors, posture, movement, and where the bird was in its habitat. For a call or song, describe its pitch, rhythm, repetition, and direction. Concrete details are more useful for later comparison than a guess written without its supporting clues.
Make a clean sound recording
Choose one vocalizing bird when possible, point the phone microphone toward it, and keep traffic or wind behind you. Stay still and quiet while recording, and aim for 30 seconds or longer when conditions allow. Get closer only when you can do so without disturbing the bird. Listen back and verify a proposed species with an independent reference.
Use a candidate as a starting point
If you are unsure, write down the best candidate and the clue that supports it, then note what you would need to check next. BirdLens can help you explore a photo or bird sound and browse a bird guide, but treat any app result as a lead to compare with your own observation and a trusted reference.
Continue with BirdLens
Use the free bird guide to compare species, or explore photo and sound identification in the app.
Sources and editorial note
This independently written sheet was informed by the observation fields in the Cornell Lab of Ornithology’s Bird Count Tally Sheet and by eBird’s smartphone recording advice. The layout and wording here are original; neither organization created or endorses this resource.