First and last dates of migrant birds in Yorkshire up to 2016

Geoff Dobbs has compiled data on the first and last dates on which some common migrant birds have been recorded in Yorkshire from the 1970s until 2019. This is a work in progress.

  • click here to download a list of the average first and last dates in that period. 
  • click here to download a master file containing all the early and late dates for each year in that period.
  • click here to download a list of the earliest and latest dates ever recorded in the county.