Daubenton's bats take insects from close to the water surface. The pipistrelle is Britain's smallest bat. It varies in colour, but is usually medium to dark brown on the back and only slightly paler underneath. It is the most common species in towns. The noctule bat is one of the largest British species and is usually the first bat to appear in the evening, sometimes even before sunset.
Adults generally have short, sleek, golden evenly-coloured fur.
Juveniles, newly moulted adults and some females are a dull chocolate brown colour. They have broad brown ears and a distinctive mushroom shaped tragus. In New Mexico, the species occurs at low to moderate elevations to as high as 9500 feet elevation. The nectivorous Mexican long-tongued bat will often come to a hummingbird feeder for a drink. They will come in small groups of six to eight bats, with three or four hovering around at one time.