Two species found in Kakslammi, the endangered gorse pod moth (Cydia succedana) and the near threatened six-spot burnet (Zygaena filipendulae), use birdsfoot trefoil (Lotus corniculatus) to feed their larvae.

Birdsfoot trefoil is also an important food plant for the larvae of many butterfly species, such as some blues. In inland, birdsfoot trefoil grows on sunny roadsides, gravel pits and esker forests, for example.