Small mammal survey
words by Alex White
Over the weekend I helped out Oxon Mammals who were surveying small mammal populations in woodlands as part of a larger survey for the Mammal Society.
50 Longworth traps were set out in pairs over a 5 x 5 grid, 15m apart on Friday morning, then checked and reset Friday evening, Saturday morning and evening and Sunday morning and evening.
The traps were set with apple for moisture, seeds for food, plus shrew food and hay for warmth and bedding. The traps were covered with bracken for extra warm over night and protection from the sun during the day.
The corner of the whole grid was marked with canes, and blue ribbon marked where each pair of traps where laid.
Each small mammal caught was identified, sexed, weighed and had its fur clipped so we would be able to tell if it was re-captured.
The fur clipping was quite a complicated system of combinations, but each combination was logged and checked every time another mouse or vole was caught.
Want to read more about the Small Mammal Survey , follow the link to Alex’s blog
© Alex White / Appleton Wildlife Diary 2019
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