baby water vole
About this time of year, when numbers peak, you do sometimes get one individual who's a little bolder than the rest and will approach very close. This vole came up to me yesterday and bit my boot; today it tried to take my apple, but I hung on and ended up hand-feeding it. At no other time in the year could I hope to do this, nor am I on such familiar terms with any other colony. But the habitat on this particular site is so rich and the vole population correspondingly so dense that I think it must affect group character.
This field is also full of butterflies, more than any other site I've ever come across.