Welcome to the Yorkshire Naturalists' Union

1861 to the present...

Recording the ever-changing flora and fauna of Yorkshire for over 150 years.

We are an association of amateur and professional naturalists covering a wide range of aspects of natural history.

We study the 'old' county of Yorkshire, as individuals and through our many Affiliated Societies, many of which are local naturalists' groups. The YNU organises field meetings throughout the county and an annual conference.  Visit our Events Page to find out more about YNU activities and how you can join in - everyone is welcome!

The YNU publishes three issues of The Naturalist, a County Bird Report and a Butterfly and Moths Report annually (in association with the Yorkshire Branch of Butterfly Conservation). These are all free to members. The YNU also publishes books on natural history subjects from time to time.

YNU Information Menu


A list of officers for the Yorkshire Naturalist Union.

Recording Wildlife

Recording and studying wildlife is the main focus of the YNU

Natural Sciences Forum

An open forum to discuss ideas for the development of the YNU

Constitution and Rules

YNU Constitution

YNU Presidents

A list of former YNU Presidents