Their fur is a reddish or dark colour above, with a paler underside.

The underside of a deck is the deck head.

There is usually a " resonance head " on the underside of the drum, these are usually tuned to a slightly lower pitch than the top drumhead.

Typically, the main differences is that a fire barrier wall is not structurally self-sufficient, and does not extend through the roof, or necessarily to the underside of the floor above.

Their plumage is mainly light chestnut brown with blackish spots on the upperside and buff with narrow blackish streaks on the underside ; the remiges are also blackish.

Juveniles look like adult females, but the underside streaks are wider ; the yellow of their bare parts is paler.

The direction of the net force implies that the average pressure on the upper surface of the wing is lower than the average pressure on the underside.

Marsupials give birth at a very early stage of development ( about 4 – 5 weeks ); after birth, newborn marsupials crawl up the bodies of their mothers and attach themselves to a nipple, which is located on the underside of the mother either inside a pouch called the marsupium or open to the environment.

Unlike a bird's beak ( in which the upper and lower parts separate to reveal the mouth ), the snout of the platypus is a sensory organ with the mouth on the underside.

Firstly, a few inches below a branch-trunk joint on a tree trunk where the moth is in shadow ; secondly, on the underside of branches and thirdly on foliate twigs.

The PA is " a ring-style piercing that extends along the underside of the glans from the urethral opening to where the glans meets the shaft of the penis.

The massive mountain does not appear on a map of the original Ringworld, leading Louis to conclude that it is in fact the result of a meteor impact with the underside of the ring, which pushed the " mountain " up from the ring floor and broke through.

The top of the mountain, above the edge of the Ring's atmosphere, is therefore a passage to the underside of the Ringworld and freedom.

Banana board is a term used to describe skateboards made of polypropylene that were skinny, flexible, with ribs on the underside for structural support and very popular during the mid-1970s.

A " roof " is a spectacular offensive block that redirects the power and speed of the attack straight down to the attacker's floor, as if the attacker hit the ball into the underside of a peaked house roof.

A common misconception is that in order to generate lift it is essential for the wing to have a longer path on the topside compared with the underside.

They lack true ears but have lateral lines running down the length of the body and underside, which is how they can sense movements and vibrations in the water.

The underside is creamy white with a yellow tinge.

The mouth is located just behind the head, on the underside of the body.

Indigestible remnants arrive in the rear intestine, or rectum, which is once again lined with a cuticula and which opens at the anus, located on the underside near to the rear end.

Two microphones record the engine directly: one is taped to the underside of the hood, near the engine block.

The cheetah kills its prey by tripping it during the chase, then biting it on the underside of the throat to suffocate it ; the cheetah is not strong enough to break the necks of the four-legged prey it mainly hunts.

A reliable method to distinguish the two similar species is by counting the sensory pores on the underside of the mandible.

" Rosenberg argues " This awareness of a double motive haunts both books and ultimately destroys their protagonists who would not fully acknowledge the dark underside of their idealism.

In the Kanchenjunga region of eastern Nepal, the Limbus know red pandas as kaala, which literally means dark because of their underside pelage ; villagers of Tibetan origin call them hoptongar.

There are no spots on its white underside, but the tail has spots, which merge to form four to six dark rings at the end.

Unlike the similar-looking and closely related muskellunge, the northern pike has light markings on a dark body background and fewer than six sensory pores on the underside of each side of the lower jaw.

The back of the Philippine Eagle is dark brown, while the underside and underwings are white.

It differs from the nominate subspecies in the very dark, dense barring on its underside and its black ear coverts.

In flight, the adults show a dark leading edge of the wing and has a white wing-lining on the underside.

In the North American subspecies borealis, the fledglings are tinged quite brown indeed on upperside and wings, and have sharp and dark underside bars.

The features that identify it from other mollymawks ( except the closely related Campbell Albatross are the dark eyestripe which gives it its name, a broad black edging to the white underside of its wings, white head and orange bill, tipped darker orange.

Mid-sized, quite dark blue on mantle contrasting cleanly with very white underside.

The typical hobbies are traditionally considered a subgenus Hypotriorchis due to their similar morphology: they have ample amounts of dark slaty grey in their plumage ; the malar area is black and the underside usually has lengthwise black streaks.

Immature birds lack iridescence and are dark brown, grading into slightly lighter brown on the underside.

When seen from above, the bird's black back blends into the dark water below, while the bird's underside blends into the sunshine above when seen from below.

Juveniles have shorter bills with a dark underside, and a strong white on the wing and mantle feathers.

The male has a dark head with a green sheen, a black breast, a light back, a black tail, and a white underside.

* Hybrids between Lesser Scaup and Ring-necked Ducks are recognizable by very dark wings contrasting with a light grey underside more than in the Lesser Scaup but less than in the Ring-necked Duck.

The fur is sand-coloured with dark guard hairs ; the underside is whitish, legs and tail bear black rings.

The tails are dark brown ; darker spots pattern the back side of the tail while the underside of the tail is solid.

The underside is pale with dark spots and the tail is ringed.

They are grey, varying from dark grey at the top near the dorsal fin to very light grey and almost white at the underside.

The underside of the body is white, and the dorsal surface ranges from dark purplish-black through reddish-brown to pale fawn, with small white, yellow and black spots in patterns.

There are a number of other ways in which the two species differ which are best seen when they are flying: a ) Short-eared often has a broad white band along the rear edge of the wing, which is not shown by Long-eared ; b ) on the upperwing, Short-eared Owl's primary-patches are usually paler and more obvious ; c ) the band on the upper side of Short-eared Owl's tail are usually bolder than those of Long-eared ; d ) Short-eared's innermost secondaries are often dark-marked, contrasting with the rest of the underwing ; e ) Long-eared Owl has streaking throughout its underparts whereas on Short-eared the streaking ends at the breast ; f ) the dark markings on the underside of the tips of the longest primaries are bolder on Short-eared Owl ; g ) the upperparts are coarsely blotched, whereas on Long-eared they are more finely marked.

* the dark markings on the underside of the tips of the longest primaries are bolder on Short-eared Owl ;

Tenerife and La Palma ( western ) birds are most distinct, being dark above with some rusty / beige hue on the underside in males.