Budgerigar (Melopsittacus undulatus) beak,coloured scanning electron micrograph (SEM). The outside surface of the beak,seen here,is covered by a thin horny sheath of keratin called the rhamphotheca. This bird is a highly sociable type of parrot. Magnification: x400 when printed 10 centimetres wide | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 4841 px × 3661 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |