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A phosphene is the perception of light without light actually entering the eye, for instance caused by pressure applied to the closed eyes. A phenomenon that could be entoptical if the eyelashes are considered to be part of the eye is seeing light diffracted through the eyelashes.
The gyrfalcon is larger, broader-winged and longer-tailed than the peregrine falcon, which it is known to compete with (and occasionally hunt). It differs from the buzzard in general structure, having pointed wings. The gyrfalcon is a very polymorphic species, so its plumage varies greatly. The archetypal morphs are called "white", "silver ...
The peregrine falcon (Falco peregrinus), also known simply as the peregrine, [3] is a cosmopolitan bird of prey (raptor) in the family Falconidae. A large, crow-sized falcon, it has a blue-grey back, barred white underparts, and a black head. The peregrine is renowned for its speed.
A falcon chick, especially one reared for falconry, still in its downy stage, is known as an eyas [21] [22] (sometimes spelled eyass). The word arose by mistaken division of Old French un niais, from Latin presumed nidiscus (nestling) from nidus . The technique of hunting with trained captive birds of prey is known as falconry.
Visual phototransduction is the sensory transduction process of the visual system by which light is detected by photoreceptor cells (rods and cones) in the vertebrate retina.A photon is absorbed by a retinal chromophore (each bound to an opsin), which initiates a signal cascade through several intermediate cells, then through the retinal ganglion cells (RGCs) comprising the optic nerve.
SPOILER ALERT: Do not read if you have not watched the first season finale of “The Falcon and the Winter Soldier,” streaming now on Disney Plus. The six-episode run of “The Falcon and the ...
SPOILER WARNING: Do not read if you haven’t yet watched Season 1, Episode 2 of Disney Plus’ “The Falcon and the Winter Soldier.” Who takes ownership of a superhero’s public persona once ...
Orange-breasted falcon at Chapada dos Guimarães, Mato Grosso State, Brazil Conservation status Near Threatened (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Aves Order: Falconiformes Family: Falconidae Genus: Falco Species: F. deiroleucus Binomial name Falco deiroleucus Temminck, 1825 The orange-breasted falcon (Falco deiroleucus) is a Near ...