Record Hawfinch arrival10 Nov 2017
Hawfinch is a scarce breeder in Britain, with an estimated 500 to 1,000 pairs. Although small numbers of migrant Hawfinches are noted every autumn, from early October onwards, single birds and even flocks began to be observed well away from traditional breeding sites and coastal watchpoints. The origin of this influx is difficult to pinpoint, but observers in several other European countries have noted higher than average counts of Hawfinches.
Records logged in BirdTrack included peak counts of over 100 birds, with the reporting rate exceeding 3% of complete lists by the end of October, more than 12 times higher than the historical average.
BTO Conference 2021: Session 5 The Witherby Lecture - Coevolution as an engine of biodiversity: insights from African birds
The talk will be held online using Zoom. Ever since Darwin’s wonderful image of a tangled bank of life, we’ve known that interactions between different species are a powerful force in evolution. This talk will use...
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.