daany ah! the link........so, by your link ( bless them) if the clue said 5&4....then fieldmice would be incorrect.
We didn't know whether it was one or two words until 11.18 Mamya.
Sqad, from Chambers Word Wizard
fieldmouse noun any of various species of small mouse, native to Europe, non-tropical Asia and S America, with yellowish-brown fur, prominent ears, large beady eyes and a long tail, that live among dense vegetation and feed mainly on seeds, but also eat berries, roots, insects and grubs, and can cause serious damage to tree seedlings.