Arnside and Silverdale AONB Landscape Trust Events

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Brown Hair-streaks at Coldwell – Winter Survey 2022/3

Sunday 4th December, 2022 at 10:00 am - 2:00 pm

With Lynne Farrell.

Come and join the hunt for Brown Hair-streak eggs!

Our reserve at Coldwell Parrock has the honour of being the site of the first recorded sighting of Brown Hair-streak butterflies in the recent era. Since that first record in 2011, the butterfly has been spotted at various locations in Gait Barrows and is known to be spreading onto other parts of our Coldwell reserves.

Volunteers are invited to help with a detailed search of the blackthorn bushes of the Coldwell Horseshoe for the eggs of this rare butterfly, in an attempt to find out how well established our local population has become and how far it is spreading.  Winter is an ideal time to conduct this survey, as the eggs are more easily spotted whilst the blackthorn is bare of foliage, so do come along and help us to hunt!

NUMBERS ARE LIMITED at this event. To register an interest, please contact the organiser, Lynne Farrell by email.

Participants should bring hand-lens, notebook, drink (preferable a warm one!) and light refreshments. Please also wear suitable warm
clothing as we don’t move very quickly whilst searching for eggs!


Sunday 4th December, 2022
10:00 am - 2:00 pm


Coldwell Reserves
Cold Well Lane
Yealand Storrs, United Kingdom
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Additional booking information

If you prefer to book via email, or wish to book on more than one walk without completing multiple booking forms, you can write to us at, giving the walk code and title of each walk you wish to attend, together with the name of each person attending, their email address and contact telephone number, and stating whether or not they are Landscape Trust members.  Your request will be dealt with as quickly as possible but please be aware that orders entered via the online system (where available) may be processed ahead of your request.  In cases when there are only two or three places left you will always stand the best chance of securing the places you want by using the online booking option, if this is offered.

For our bookable events, the precise start location and details  will normally only be released to those with confirmed bookings.   This information will be sent by email either with the booking confirmation, or communicated to you by telephone if you have not provided an email contact address.

Please read our Health & Safety Policy before taking part in an event.