Mammals:
* Red Squirrel: Facing competition from the invasive grey squirrel, habitat loss, and disease.
* Water Vole: Declining due to habitat loss, predation by introduced mink, and disease.
* Otter: Once almost extinct, numbers are recovering but still vulnerable to pollution, habitat loss, and road traffic.
* Hedgehog: Declining due to habitat loss, road traffic, and pesticide use.
* Bats: Various species are endangered, including the lesser horseshoe bat, the barbastelle bat, and the brown long-eared bat, due to habitat loss, disturbance, and disease.
Birds:
* Curlew: Declining due to habitat loss, agricultural intensification, and predation.
* Lapwing: Declining due to habitat loss, agricultural intensification, and predation.
* Nightingale: Declining due to habitat loss and fragmentation.
* Turtle Dove: Declining due to habitat loss, agricultural intensification, and climate change.
* Corn Bunting: Declining due to habitat loss and agricultural intensification.
Reptiles and Amphibians:
* Adder: Vulnerable to habitat loss, fragmentation, and disturbance.
* Grass Snake: Vulnerable to habitat loss, fragmentation, and pollution.
* Smooth Newt: Declining due to habitat loss, fragmentation, and pollution.
* Great Crested Newt: Protected species, declining due to habitat loss and disturbance.
Invertebrates:
* Stag Beetle: Threatened by habitat loss, pesticide use, and light pollution.
* Bee species: Many bee species are declining due to habitat loss, pesticide use, and disease.
* Butterflies: Many butterfly species are declining due to habitat loss, climate change, and pesticide use.
Other:
* Atlantic Salmon: Declining due to pollution, habitat loss, and overfishing.
* Sea Trout: Declining due to pollution, habitat loss, and overfishing.
It's important to note:
* This is not an exhaustive list, and there are many other endangered species in England.
* The conservation status of species can change over time, so it's always best to check the latest information from conservation organizations.
* It's crucial to support conservation efforts to protect these endangered species and their habitats.
You can find more information about endangered species in England on the websites of organizations like the RSPB, the Wildlife Trusts, and the Natural History Museum.