Wildlife of Britain

Here’s an alphabetical list of non‑native species established (resident) in the British Isles, grouped by major taxonomic categories and including scientific names.  This list focuses on species known to have self‑sustaining wild populations rather than species that have been seen only sporadically or in captivity.  This is not a full list of all non-native species. Authorities such as the GB Non‑Native Species Secretariat (NNSS) list over 2,000 non‑native species established in Great Britain, including animals, plants and other organisms. Non-Native Species Secretariat A — Birds, Animals & Plants African sacred ibis — Threskiornis aethiopicus (wild populations recorded)  Alligator weed — Alternanthera philoxeroides (invasive aquatic plant)  American bullfrog (pictured) — Lithobates catesbeianus (established populations; invasive threat)  American skunk cabbage — Lysichiton americanus (listed invasive plant)  Asian hornet (yellow‑legged hornet) — Vespa ...

Stick Insects in Britain Stick insects are among the most unusual insects found in Britain.  Resembling twigs or stems, they rely on extraordinary camouflage to avoid detection. Unlike many native British insects, however, stick insects are not indigenous to Britain.  All established populations originate from accidental or deliberate introductions, primarily from New Zealand. The most widespread species is the Prickly Stick Insect (Acanthoxyla geisovii), accompanied locally by the Unarmed Stick Insect (Acanthoxyla inermis) and the Smooth Stick Insect (Acanthoxyla prasina).  These species have become naturalised in parts of southern England and Wales. Origins and Establishment Stick insects were first recorded breeding in the wild in Britain in the early 20th century. The genus Acanthoxyla originates from New Zealand, and it is believed that: Eggs were accidentally transported on imported plants, or Captive individuals from private collections escaped or were released. Be...