Protein-enriched food supplement to ensure good feather growth and help prevent plumage defects After years of research and experiments we developed NEKTON-BIO to meet certain problems in a bird& 146 s plumage and to ensure healthy feather growth in all types of birds. Feathers are largely protein in nature, which is why 18 free amino acids have been included in NEKTON-BIO to help a bird build the proteins needed. Of the amino acids, arginine, methionine and lysine are particularly vital in a supplement because most cage or aviary birds are fed on bird seed, which is poor in these amino acids. Vitamins A, E, and Biotin also have a positive effect on feather growth. Altogether 13 vitamins, 6 trace elements and calcium have been combined with the amino acids to create a special formula to support the organism during the moult and encourage the growth of smooth and glossy feathers.