BTO books and guides
BTO publishes a number of books and field guides to refer to and inform the interested Birdwatcher and active surveyor alike.
Migration blog – Winter
As we get ever closer to the end of autumn the pace of migration steadily slows, and as the daylight hours shorten so does the variety of birds on the move.
Making the most of BirdTrack data
We have been working to produce useful summaries for bird reports using data from the millions of annual BirdTrack records.