This page presents the current statistics on the BOS Monthly Records database. Note that since 2011 the database includes non-member records submitted via the BTO BirdTrack system. The charts show the summary for all records received, except where specifically noted.

Our electronic records start from 1982 and we have currently have almost 400,000 records (up to end 2020). The following charts present the annual status of the records, showing:

  • The number of records submitted by BOS members and from other sources (total). Note that duplicate sightings are omitted, i.e. the same bird seen at the same site on the same day.
  • The total number of species recorded each year. Statistics for the years prior to 1982 come from the Annual Reports. The dashed line is the trend. The dip for 1982-83 is in part due to the switch to the electronic recording system.
  • The number of grid squares records come from. Note that the BOS surveys 1200km2, so the charts show that recording comes from over 50% of the BOS area, a remarkably good rate of coverage
  • The number of named sites. Site names have been standardised since 2016 which allows us to better assess the number of sites visited.

 

UK currently holds approximately a quarter of the global Curlew population, with estimates for England of about 30,000 pairs. National monitoring data show that this population has been in long-term decline since the 1970s and has almost halved in the UK over the last 20 years. In lowland southern England, the population has declined to about 500 pairs, with many colonies on the verge of local extinction. Read more ...

Uzbekistan:  Birding the Silk Road in Central Asia  -  Alan Peter

A spectacular and little-visited country lying on the famous Silk Road that once connected the East with the West and one of the group of former Soviet republics which border it on three sides - Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan while it’s southern border touches Afghanistan. Read more ...

The Long Day Count is carried out by teams of observers in each of the twelve 10km squares recording the number of bird species seen during a maximum of 12 daylight hours on the second Sunday in May each year. Read more ...

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