Coloured scanning electron micrograph (SEM) Hummingbird feather shaft, barbs and barbules (Selasphorus rufus).Selasphorus rufus as one of the feistiest hummingbirds in North America (family Trochilidae). The rufous hummingbird is well-known for its aggressive defence of flowers and feeders, even against species many times its own size. It is a relatively small and compact species, with short wings, a tail that tapers to a point, and a slender, straight, black bill. Hummingbirds have the highest metabolism of any homoeothermic animal. Magnification: x23 when shortest axis printed at 25 millimetres. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / DENNIS KUNKEL MICROSCOPY |
Bildgröße: | 3325 px × 2628 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |