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First Bird
Repeller of China
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Introduction
of Bird Damage
http://www.packer.net.cn |
| Bird
damage to grapes and tender fruit (mainly sweet cherries and cultivated
blueberries) is a serious problem for many growers. Unchecked, birds
can completely destroy an entire crop. A flock of 5,000 starlings
can consume up to 1 ton of food over a 10 day period, and blackbirds
were blamed for an estimated loss of 15 million tons of food worldwide
in 1968. This is enough to feed 90 million people. Even with the best
effort and control equipment, bird damage will still occur. In many
cases, the cost of even limited success has been unacceptable due
to social disturbance (noise from control equipment) and/or environmental
impact (chemical controls). It appears as though bird predation is
escalating, especially in the Niagara Peninsula where 95% of Ontario's
grapes and sweet cherries are grown.
Next：Why Are Problems Worse Than
Before?
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