Tracks

Weasels have sinuous gliding or bounding motion leaving paired tracks. Toe Pad Marks on Hind Feet 4 toe pads showing
Claw Marks will be see on occasion.
Weasel map

Kills similar to:

The Weasel

Weasels are known to be very neat killers, usually biting the bird through the back of the neck, skull, under the wing, or sometimes less often the vent. They may kill several birds in one night, often placing them in a neat pile. Closely spaced pairs of canine tooth marks are a sign of a weasel. To consume the eggs, weasels will completely crush the eggshells similar to the opossum.

Appearance
Weasels are small slender, vicious, carnivorous mammals of the Mustelidae family (the same family badgers, wolverines, minks, ferrets, and otters). There are several different species of weasels that are found worldwide and on every continent except for Australia and it's surrounding islands. Each species of weasel varies in color, size and to a small extent their behaviors. The common weasel (also referred to as the Least weasel or European weasel) is the most widespread throughout the northern hemisphere.

Weasel behavior
Weasels are solitary animals that spend the majority of their time hunting on the ground both during the day as well as at night. Despite their small size, weasels are very strong and powerful, with the ability to kill animals much larger then themselves.
PoultryDVM Predator Profile - The Weasel

Habitat
Weasels are known to make nests in tree roots, abandoned burrows lined with grass and fur, and crevices that are located in a variety of different habitats, including wooded areas, grass plains, and urban farm areas.

Diet
A weasel's diet consists of whatever meat they can obtain and may include poultry as well as their eggs.

Exclusion

Ensure there are no openings larger than 3/4" thick, 3" wide : Weasels have flexible rib cages, allowing them to flatten their bodies to fit through very small spaces. Seal areas with 1/2" plastic-coated hardware cloth. Do not use chicken wire, as it is not effective for keeping weasels out.

References

  1. Prevention and Control of Wildlife Damage. Editors, Scott E. Hygnstrom, Robert M. Timm, Gary E. Larson. 1994. University of Nebraska-Lincoln. 2 vols.
  2. http://www.extension.org/pages/10847/weasels#.VIKnqTHF98E
  3. http://www.ces.ncsu.edu/nreos/wild/pdf/wildlife/WEASELS.PDF
  4. http://extension.missouri.edu/p/MX135
  5. http://www.nationaltrappers.com/bmpweasel.pdf