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Second winter fieldwork season started on 1st November


Lapwing by Jill Pakenham


There are two ways you can help:

Choose one or more tetrads to do Timed Tetrad Visits
Collate lists, anytime, anywhere for Roving Records

Note: a tetrad requires two visits in the winter and two visits in the breeding season and is then complete - it should not be covered in all four years.

Use the relevant button below to access Bird Atlas online. For any questions contact:

Note: The BTO Online Database will be unavailable from 0200 hrs on Tuesday 25th Nov until the morning of Thursday 27th Nov for essential upgrading. If you have difficulties accessing, please try again later. This message will be removed when maintenance complete.

If you've never used any BTO online systems, click this button to register for a username

If you've used a BTO online system, e.g. Garden BirdWatch online, BBS online or BirdTrack, click here to setup for Bird Atlas

Returning users, click this button to gain entry to Bird Atlas online. You can request tetrads, enter data and view lists for 10-km squares

If you want to have a look at where you can help with atlas fieldwork without registering for Bird Atlas Online click here

If you want to know more about the relationship between the Bird Atlas and BirdTrack please click here

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