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Two eyes usually move independently, [6] [7] and in some species they can move coordinatedly in opposite directions. [8] Birds with eyes on the sides of their heads have a wide field of view, useful for detecting predators, while those with eyes on the front of their heads, such as owls, have binocular vision and can estimate distances when ...
Instead of moving their eyes, owls swivel their heads to view their surroundings. Owls' heads are capable of swiveling through an angle of roughly 270°, easily enabling them to see behind them without relocating the torso. [29] This ability keeps bodily movement at a minimum, thus reduces the amount of sound the owl makes as it waits for its prey.
The sound waves travel through the owl’s ear canal until they reach the eardrum, through the ossicles, and into the inner ear so that the owl is able to perceive exactly where their prey is located. As owls depend on their ability to track prey using their super sense of hearing in order to survive, it is important to understand the ...
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The bird family Tytonidae, which includes the barn owls Tyto and the bay owls Phodilus, is one of the two families of owls, the other being the true owls or typical owls, Strigidae. They are medium to large owls with large heads and characteristic heart-shaped faces. They have long, strong legs with powerful talons. They also differ from the ...
In ornithology, the facial disc is the concave collection of feathers on the face of some birds—most notably owls—surrounding the eyes. The concavity of the facial disc forms a circular paraboloid that collects sound waves and directs those waves towards the owl's ears. The feathers making up this disc can be adjusted by the bird to alter ...
Tarsiers morphology allows for them to move their heads 180 degrees in either direction, allowing for them to see 360 degrees around them. [21] Their dental formula is also unique: 2.1.3.3 1.1.3.3 [ 22 ] Unlike many nocturnal vertebrates, tarsiers lack a light-reflecting layer ( tapetum lucidum ) of the retina and have a fovea .
To better triangulate sounds and make hunting easier, the pygmy owl's ears may be asymmetrically placed. [12] Female owls tend to be bigger than males. [13] Some species of pygmy owl, including the northern pygmy owl, have ocelli on the back of their heads. [14] These eyespots may contribute to the owls' self-defense against mobbing. [15]