These adaptations include their size , their stout legs , and their claws which allow them to cling tightly to hair , fur and feathers ; other adaptations include being wingless and dorsoventrally flattened .

These adaptations are reflected in their size -LRB- NUMBER@1 -- NUMBER@2 mm -RRB- , stout legs , and claws which are adapted to clinging tightly to hair , fur and feathers .
