Ermine – Mustela Erminea

Distinguishing Features – Overall colouration – in summer, brown upperparts; creamy legs, sides and chest. Tail, long, tipped in black. In winter, colouration is pure white except for black-tipped tail.




Male: 25.4 – 33 cm (10 – 13 in)
Female: 21.5 – 26 cm (8.5 – 10.25 in)


Wide range throughout Northwestern Ontario, in coniferous and mixed wood forests; also shrub areas, lakeshores and forest edges.


Primarily small rodents; also reptiles, fish, birds, eggs, insects, worms and carrion.


The ermine has a very high metabolic rate which makes it a very effective and agile hunter. However, its slim body shape dictates that it must eat often to survive. Even during winter, it stores food supplies in caches to feed through the colder months.

Once trapped extensively for their luxuriant winter coat, the ermine has survived and is found in significant numbers in Northwestern Ontario and throughout Canada. A female will produce a litter of 4 to 9 offspring every spring.