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A bird control spike, also known as an anti-roosting spike, [1] pigeon spike, or roost modification, is a device consisting of long, needle-like rods used for bird control. Bird control spikes can be attached to building ledges, street lighting , and commercial signage to prevent wild or feral birds from perching or roosting.
Tullio phenomenon, sound-induced vertigo, dizziness, nausea or eye movement was first described in 1929 by the Italian biologist Prof. Pietro Tullio.(1881–1941) [1] [2] During his experiments on pigeons, Tullio discovered that by drilling tiny holes in the semicircular canals of his subjects, he could subsequently cause them balance problems when exposed to sound.
A sound test is a function built into the options screen of many video games. This function was originally meant to test whether the game's music and sounds would function correctly (hence the name), as well as giving the player the ability to compare samples played in Monaural , Stereophonic and later Surround sound.
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A pigeon typically flies at 20 km/h, so a turn could cause up to a 12% modulation of an infrasonic stimulus. According to response measurements, pigeons are able to distinguish frequency changes of 1-7% in the infrasonic range, showing that the use of Doppler shifts for infrasound localization may be within the pigeon's perceptive capabilities ...
It is generally agreed upon in birding and ornithology which sounds are songs and which are calls, and a good field guide will differentiate between the two. Wing feathers of a male club-winged manakin, with the modifications noted by P. L. Sclater in 1860 [4] and discussed by Charles Darwin in 1871. [5] The bird produces sound with its wings.
A traditional scarecrow. Bird scarers is a blanket term used to describe devices designed for deterring birds by startling, confusing or otherwise repeling them, typically employed in commercial settings by farmers to dissuade birds from consuming and defecating on recently planted arable crops.
The 1987 film House of Games contains a pigeon drop in the second act. [18] In 1983, Season 10 of The Jeffersons began with a three-episode arc about a pigeon drop scam. [19] The 2015 Better Call Saul episode "Hero" features a scene where Jimmy McGill and his friend, Marco Pasternak, use a pigeon drop to scam a mark out of a wallet. Jimmy ...