Each of the caches nearby named "TSPTOB" are part of the mystery cache "The Sunny Port Town Of Barnsley". You do not need to do the mystery cache to be able to find the indiviual caches, these can be done as standalones if you wish.
Tweezers are required. If you are unable to climb the tree, we will accept a picture of the cache as proof of your finding (:
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Looking at your initiation scroll it looks like the captain wants you to check in on his parrots-to-be.
Good luck pirates!