The Longworth trap is designed to capture small mammals with the minimum of discomfort to the animal. The anti-corrosion aluminium construction keeps the Longworth trap lightweight for field use and it is designed to allow easy access to all parts for cleaning.
The trap consists of two parts: a tunnel which contains the door tripping mechanism, and a nest box, which is attached to the back of the tunnel. The nest box provides a large space for food and bedding material to ensure that the trapped animal is comfortable until release. When in use the nest box is positioned at an upwards angle to the trap tunnel to prevent rain entering the nest box and to provide drainage of urine or condensation. When the trap is not in use the tunnel can be conveniently placed inside the nest box for easy carriage or storage. A Longworth trap without a shrew hole is available for use in areas where shrew trapping is unlikely. The sensitivity of the tripping mechanism is adjustable.
NB: Some small mammal species are protected by law (e.g. shrews in the UK) and you must obtain a licence from Natural England, Scottish Natural Heritage or Natural Resources Wales if you set traps with the intention of trapping any species of shrew. Please ensure you are aware of and meet the requirements of any relevant laws in the country in which you are trapping.
For more information on the Longworth mammal trap, including how to use it and the history of its development, see the NHBS blog.
Weight: 300 g
Construction: Corrosion-resistant aluminium
Size of nest chamber: 14 cm x 6.5 cm x 8.5 cm
Total length when set: approx 25 cm
Diameter of shrew hole: 12.5 mm
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