Wood Mouse

The wood mouse, also referred to as the long-tailed field mouse, is frequently confused with the only other resident mouse species in Ireland, the common house mouse.

Identification

Wood mice typically exhibit a dark brown coloration on their backs with a yellow to brown hue on their flanks and a greyish-white underbelly. Juveniles appear grey in color. The primary distinguishing characteristics between the two Irish mouse species include larger eyes, ears, and a significantly longer tail in wood mice. Additionally, their hind legs are proportionally larger, measuring up to 3cm in length relative to their body size.

More details can be found at https://www.conserveireland.com/mammals/wood_mouse.php.