#alarm-systems

[safe-tsecurity-blog]

Safe-T Security

Family owned Safe-T Security Sight & Sound has been offering top-of-the-line security and automation to fit your home or business for over 30 years.

[stanley1040]

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[minus229k]

Pigeons don’t have the very best reputation, but they are smarter than they seem! Crested pigeons, which are found all over Australia, have been now caught to actually communicate through the noises they produce with their feathers when flying. 

The distinctive whistling has been now looked into by a team of the Australian National University, trying to find the reason. While Darwin once proposed that it was a non-vocal communication on directed to each other, the new study proposes that it might be used as an alarm signal for the flock. If it was that way, there would likely be a specific, physical adaption responsible for the noise; so the team started to search for that by taking high-speed videos of crested pigeons taking flight and paired that with acoustic recordings. They found that the noise oscillates between a high note o the wings’ downstroke, as and a low note during upstroke; they found that the wings have one flight feather that is off, compared to the other eight primary flight feathers, being located more narrow to the shoulder than the other ones and roughly half the width of the feathers on each side of it, dubbed p8. To test whether this was the source of the whistling, they ran feather-removal-experiments. Birds without the P8-feathers made whistles that make completely different high notes, which suggests that the modified feather is responsible for the sound.

Furthermore, they found that the whistling does work as an alarm-signal, and that other pigeons actually respond to it. It is handy as an alarm-stimuli because it is hard to fake, compared to vocal communication; it is also the only one among birds.

[newcenturygirls-blog]

Driveway alarm is probably the best option that you can have with respect to efficient and inexpensive Do It Yourself home security systems. Getting your home equipped with an effective driveway alarm does a lot more than just alerting you of any possible break-in.

[edward338322-blog]

It\\\'s important to make a safe at home when one thing happens for your family, to make certain they\\\'ve got the things that they need and to give protection to them and keep them safe.

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[ruth33-blog]

[ruth33-blog]