How do lizards walk upside down?
Many lizards, such as geckos and skinks, can walk upside down and climb up walls. They have special toe pads that can support their weight.
Their toe pads have microscopic hairs or bristles, called setae, that act like Velcro, enabling their feet to stick to surfaces.
On each of the setae are millions of even smaller tips, called septulae. Each one can grip the surface.
Continue reading “How do lizards walk upside down? “
The Feather Duster Worm (Sabellastarte spectabilis) is a tropical marine worm, or bristleworm – a polychaete. It is also called the Fan Worm. Some are sedentary (sessile) and some are mobile (errant). It is an annelid. It looks like a plant, but it is an animal.
The sedentary Feather Duster Worm lives in an elongated tube. The tube looks like a rolled-up parchment. It has segments that have appendages, called setae, or bristles, or tentacles, that look like a feather duster. The appendages are brown with white bands.
Continue reading “Feather Duster Worm”
The Australian Eastern Raven (Corvus coronoides coronoides) is a medium-sized black bird.
The Australian Eastern Raven is all black, with a black beak and grey-black legs. The upperparts have glossy feathers, with a purplish sheen. It has throat hackles with rounded tips (that looks like a beard). It has white eyes. The upper beak (mandible) has short bristles. The beak is tipped with a slight hook.
Continue reading “Australian Eastern Raven”
The D’Arnaud’s Barbet (Trachyphonus darnaudii) is a small east African bird.
The D’Arnaud’s Barbet has a yellow head with black spots and a narrow, black crown. Its upperparts are black with white spots, and its underparts are yellow with black spots. It has bristles (called barbets) on its pinky-cream beak.
Continue reading “D’Arnaud’s Barbet”
External covering is the outside appearance of an animal. Animals can have fur, feathers, hair, short hair, long hair, smooth hair, bristles, skin, thick skin, moist skin, dry skin, scales, waterproof scales, small scales, overlapping scales, spikes, hard shells, soft shells, smooth shells, rough shells, wool, or no covering at all.
Continue reading “External Covering: from skin and scales to fur and feathers”