Brown hairstreak
The brown hairstreak is an elusive butterfly that spends much of its time in the treetops feeding on aphid honeydew.
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Black hairstreak
The black hairstreak is a rare butterfly that is restricted to woodlands and hedgerows containing blackthorn - the foodplant of the caterpillar. It is both elusive and hard to tell apart from…
Purple hairstreak
The purple hairstreak is an elusive butterfly with a brilliant purple sheen. It is entirely reliant on oak trees and can be spotted chasing around the treetops in woodlands and parks.
Green hairstreak
The green hairstreak is the UK's only green butterfly. Look out for the vibrant, metallic sheen of the undersides of its wings on grassland and moorland, and along woodland rides.
White-letter hairstreak
The white-letter hairstreak gets its name from the white lines that form a 'W' shape on its underside. It is an elusive butterfly, spending much of its time in the treetops.
Invasive Species
Our work to tackle non native invasive species
Spooky Species
Be spellbound by wildlife this season!
Species Reintroduction (YDCP)
The Living Ark Project focused on four important species: tansy beetle, greater water parsnip, willow tit and narrow leaved water dropwort.
Species Recovery Appeal
Ongoing conservation actions are needed to protect Yorkshire's precious and iconic wildlife.
Yorkshire's lost species
The results of our Great Yorkshire Creature Count has forced many of us to face up to the sad fact that much of our most beloved wildlife – that not so long ago would have been a common sight in…
Yorkshire's spooky species
As Halloween draws near, we reveal some of Yorkshire's most weird and wonderful wildlife.
Invasive, Non-Native Species (YDCP)
YDCP has been managing Invasive Non-Native Species (INNS) in the Derwent catchment since 2019.