“…In recent years, finding unique and added value applications for them has attracted careful attention. Feather-based fibers are used in numerous applications including nonwovens, biochar, biodiesel, bioplastics, and composites owing to producing novel sustainable and ecofriendly materials with increasing environmental consciousness. ,, In the development of biocomposites, feather fibers, such as chicken feather (CF), have been utilized and referenced in previous detailed review articles. − Specifically, the incorporation of CF has been shown to enhance the mechanical properties of TPU in the literature. ,− …”