Found by James Aged 5- he believes this to be a chrysalis.
(Have added further pictures as suggested) Thank you
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As David says, keep it in a jar with air holes and see what develops! Good luck
"Wildlife is for Everyone"
iSpot will be here to help ID whatever does emerge if you cannot get it yourself.
Lat/Lng: 54.5, -1.1
OS grid ref: NZ6122