This data set, perhaps the longest of its kind in the country, lists all known county first arrival dates for 32 species of migrant, 29 summer and three winter, from the 1880s onwards. The data are maintained annually, with additional historical material when discovered.

An analysis of the data appeared in Birds of Shropshire (Smith 2019). A more thorough statistical examination of the enhanced data set, extended to include arrivals to 2018 and with additional nineteenth century dates, appears in the BTO journal Ringing and Migration 2020 34(1):1-7 as Descriptive models for First-arrival Dates of Migrants in an Inland UK County.

Efforts will be made to maintain SMAD into the future, long-term.


Database of arrivals dates View PDF document in new window further annual updates will appear on the main SOS website.