Sentence:  Whether in its northern or southern home, the black-throated blue warbler builds its nest of bark, roots, and other <WSD>pliant</WSD> material, loose and rather bulky, in a variety of saplings, bushes, and weeds, but always a few inches or a few feet from the ground. 
Meaning of the word marked with <WSD> tags:  Capable of plying or bending; readily yielding to force or pressure without breaking