Below gives details of the Orange Tip butterfly egg laying habits - April 2019
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Holt Island is open from 10.00 am - 4.00 pm on Saturdays, Sundays, and Bank Holidays between April and October.
Visiting at other times between April - October is possible by obtaining the key from either One Leisure, St Ives or The Norris Museum. You will need to pay a returnable deposit of £20.