chirp...

S

server

Guest
Even during WWII, radars were sending microsecond-wide multi-megawatt
transmit pulses. In subsequent years, radars hit the wall on transmit
power from reasonably-sized antennas. They would arc the waveguides
and plasma the air in front of the antenna. Wider pulses lost range
resolution.

So they invented chirp radar around 1965, a wide pulse that sweeps
frequency during the pulse. At receive time, it can be processed to
reconstruct a narrow pulse and restore range resolution.

I thought of this while feeding my scrub jays breakfast on the deck.
Birds chirp; must have copied the concept from radar. I suspect that a
distinct time:frequency pattern distinguishes species and improves the
detection s/n. So I have developed my own chirp whistle that the birds
can learn to recognize from a distance, when I have their morning
treats.

This morning one jay couldn\'t wait for me to distribute the treats
onto the deck (mixed Fritos and Cheetos) so landed on my fingers and
started eating out of my hand. Adorable. Then it bit my thumb for
dessert.



--

John Larkin Highland Technology, Inc

Science teaches us to doubt.

Claude Bernard
 
On 2020/10/30 9:06 a.m., jlarkin@highlandsniptechnology.com wrote:
....

This morning one jay couldn\'t wait for me to distribute the treats
onto the deck (mixed Fritos and Cheetos) so landed on my fingers and
started eating out of my hand. Adorable. Then it bit my thumb for
dessert.
Click to expand...

It probably finally read the ingredients list and thought you were
trying to poison it!

Fritos and Cheetos, part of a well balanced diet for birds?

You would be better off with seeds but bird seed can go bad, so perhaps
better to plant flowers and let the birds feast on the insects said
flowers attract.

John ;-#)#
 
On Fri, 30 Oct 2020 09:56:14 -0700, John Robertson <spam@flippers.com>
wrote:

On 2020/10/30 9:06 a.m., jlarkin@highlandsniptechnology.com wrote:


...

This morning one jay couldn\'t wait for me to distribute the treats
onto the deck (mixed Fritos and Cheetos) so landed on my fingers and
started eating out of my hand. Adorable. Then it bit my thumb for
dessert.


It probably finally read the ingredients list and thought you were
trying to poison it!

Fritos and Cheetos, part of a well balanced diet for birds?
Click to expand...

Fritos are their favorite by far. Ingredients are corn, corn oil, and
salt.

I like them too.



--

John Larkin Highland Technology, Inc

Science teaches us to doubt.

Claude Bernard
 
On 2020/10/30 10:01 a.m., jlarkin@highlandsniptechnology.com wrote:
On Fri, 30 Oct 2020 09:56:14 -0700, John Robertson <spam@flippers.com
wrote:

On 2020/10/30 9:06 a.m., jlarkin@highlandsniptechnology.com wrote:


...

This morning one jay couldn\'t wait for me to distribute the treats
onto the deck (mixed Fritos and Cheetos) so landed on my fingers and
started eating out of my hand. Adorable. Then it bit my thumb for
dessert.


It probably finally read the ingredients list and thought you were
trying to poison it!

Fritos and Cheetos, part of a well balanced diet for birds?

Fritos are their favorite by far. Ingredients are corn, corn oil, and
salt.

I like them too.
Click to expand...

https://www.thespruce.com/worst-foods-for-birds-385848

https://healthfully.com/272598-nutritional-value-of-fritos.html

Perhaps not too many Fritos for either you or the birds. Added fats and
salt isn\'t good for any of us.

John :-#)#
 
On Friday, 30 October 2020 16:06:38 UTC, jla...@highlandsniptechnology.com wrote:
Even during WWII, radars were sending microsecond-wide multi-megawatt
transmit pulses. In subsequent years, radars hit the wall on transmit
power from reasonably-sized antennas. They would arc the waveguides
and plasma the air in front of the antenna. Wider pulses lost range
resolution.

So they invented chirp radar around 1965, a wide pulse that sweeps
frequency during the pulse. At receive time, it can be processed to
reconstruct a narrow pulse and restore range resolution.

I thought of this while feeding my scrub jays breakfast on the deck.
Birds chirp; must have copied the concept from radar. I suspect that a
distinct time:frequency pattern distinguishes species and improves the
detection s/n. So I have developed my own chirp whistle that the birds
can learn to recognize from a distance, when I have their morning
treats.

Bats use chirped signals for echolocation. Here is a sample:
Click to expand...

https://www.ece.rice.edu/dsp/software/bat.shtml

John
 
On Fri, 30 Oct 2020 12:02:53 -0700, John Robertson <spam@flippers.com>
wrote:

On 2020/10/30 10:01 a.m., jlarkin@highlandsniptechnology.com wrote:
On Fri, 30 Oct 2020 09:56:14 -0700, John Robertson <spam@flippers.com
wrote:

On 2020/10/30 9:06 a.m., jlarkin@highlandsniptechnology.com wrote:


...

This morning one jay couldn\'t wait for me to distribute the treats
onto the deck (mixed Fritos and Cheetos) so landed on my fingers and
started eating out of my hand. Adorable. Then it bit my thumb for
dessert.


It probably finally read the ingredients list and thought you were
trying to poison it!

Fritos and Cheetos, part of a well balanced diet for birds?

Fritos are their favorite by far. Ingredients are corn, corn oil, and
salt.

I like them too.




https://www.thespruce.com/worst-foods-for-birds-385848

https://healthfully.com/272598-nutritional-value-of-fritos.html

Perhaps not too many Fritos for either you or the birds. Added fats and
salt isn\'t good for any of us.

John :-#)#
Click to expand...

You\'d die without fat and salt. Salt is a rare and valued nutrient in
most places. Birds eat corn, which is why scarecrows were invented.

Isn\'t all food \"added\" ?

I assume my backyard birds know what treats they enjoy better than
Melissa Mayntz does. Bird nutrition theories makes as much sense as
people nutrition theories, namely not much.
 
jlarkin@highlandsniptechnology.com wrote:

Even during WWII, radars were sending microsecond-wide multi-megawatt
transmit pulses. In subsequent years, radars hit the wall on transmit
power from reasonably-sized antennas. They would arc the waveguides
and plasma the air in front of the antenna. Wider pulses lost range
resolution.

So they invented chirp radar around 1965, a wide pulse that sweeps
frequency during the pulse. At receive time, it can be processed to
reconstruct a narrow pulse and restore range resolution.

I thought of this while feeding my scrub jays breakfast on the deck.
Birds chirp; must have copied the concept from radar. I suspect that a
distinct time:frequency pattern distinguishes species and improves the
detection s/n. So I have developed my own chirp whistle that the birds
can learn to recognize from a distance, when I have their morning
treats.

This morning one jay couldn\'t wait for me to distribute the treats
onto the deck (mixed Fritos and Cheetos) so landed on my fingers and
started eating out of my hand. Adorable. Then it bit my thumb for
dessert.
Click to expand...

Many people do not realize how nervous animals are around people, even
including dogs and cats. Like strangers who approach service animals in stores
trying to pet the thing. Cats do a good job of hiding their nervousness. An
exception to that rule might be like one of those big cats befriended by a
person when it was a cub. Now the thing weighs 200 pounds and can easily
destroy its human friend, during its hugs and kisses reunion, it\'s more calm
than its human friend.

The bird\'s motivation is hunger.
Good luck.
 
On Fri, 30 Oct 2020 12:02:53 -0700, John Robertson <spam@flippers.com>
wrote:

On 2020/10/30 10:01 a.m., jlarkin@highlandsniptechnology.com wrote:
On Fri, 30 Oct 2020 09:56:14 -0700, John Robertson <spam@flippers.com
wrote:

On 2020/10/30 9:06 a.m., jlarkin@highlandsniptechnology.com wrote:


...

This morning one jay couldn\'t wait for me to distribute the treats
onto the deck (mixed Fritos and Cheetos) so landed on my fingers and
started eating out of my hand. Adorable. Then it bit my thumb for
dessert.


It probably finally read the ingredients list and thought you were
trying to poison it!

Fritos and Cheetos, part of a well balanced diet for birds?

Fritos are their favorite by far. Ingredients are corn, corn oil, and
salt.

I like them too.




https://www.thespruce.com/worst-foods-for-birds-385848

https://healthfully.com/272598-nutritional-value-of-fritos.html

Perhaps not too many Fritos for either you or the birds. Added fats and
salt isn\'t good for any of us.

John :-#)#
Click to expand...

Did you know that copper is toxic to birds?

Had to backtrack on a birdhouse \'shingle\' once - that I\'d
thought was a jim dandy idea at the time, for a wren box.

RL
 
On Friday, October 30, 2020 at 12:23:31 PM UTC-7, John Larkin wrote:
On Fri, 30 Oct 2020 12:02:53 -0700, John Robertson <spam@flippers.com
wrote:

On 2020/10/30 10:01 a.m., jlarkin@highlandsniptechnology.com wrote:
On Fri, 30 Oct 2020 09:56:14 -0700, John Robertson <spam@flippers.com
wrote:

On 2020/10/30 9:06 a.m., jlarkin@highlandsniptechnology.com wrote:


...

This morning one jay couldn\'t wait for me to distribute the treats
onto the deck (mixed Fritos and Cheetos) so landed on my fingers and
started eating out of my hand. Adorable. Then it bit my thumb for
dessert.


It probably finally read the ingredients list and thought you were
trying to poison it!

Fritos and Cheetos, part of a well balanced diet for birds?

Fritos are their favorite by far. Ingredients are corn, corn oil, and
salt.

I like them too.




https://www.thespruce.com/worst-foods-for-birds-385848

https://healthfully.com/272598-nutritional-value-of-fritos.html

Perhaps not too many Fritos for either you or the birds. Added fats and
salt isn\'t good for any of us.

John :-#)#


You\'d die without fat and salt. Salt is a rare and valued nutrient in
most places. Birds eat corn, which is why scarecrows were invented.

Isn\'t all food \"added\" ?

I assume my backyard birds know what treats they enjoy better than
Melissa Mayntz does. Bird nutrition theories makes as much sense as
people nutrition theories, namely not much.
Click to expand...

Your heart is in the right place, but your head just can\'t listen to reason:
https://zupreem.com/avian/toxic-foods-your-bird-should-never-eat/
Wild birds are wild - they need to survive in the wild (be it the city or not) on their natural diet, which they have spent millions of years evolving on. Humans can only interfere with that.
 
On Sat, 31 Oct 2020 16:31:34 -0700 (PDT), Flyguy
<soar2morrow@yahoo.com> wrote:

On Friday, October 30, 2020 at 12:23:31 PM UTC-7, John Larkin wrote:
On Fri, 30 Oct 2020 12:02:53 -0700, John Robertson <spam@flippers.com
wrote:

On 2020/10/30 10:01 a.m., jlarkin@highlandsniptechnology.com wrote:
On Fri, 30 Oct 2020 09:56:14 -0700, John Robertson <spam@flippers.com
wrote:

On 2020/10/30 9:06 a.m., jlarkin@highlandsniptechnology.com wrote:


...

This morning one jay couldn\'t wait for me to distribute the treats
onto the deck (mixed Fritos and Cheetos) so landed on my fingers and
started eating out of my hand. Adorable. Then it bit my thumb for
dessert.


It probably finally read the ingredients list and thought you were
trying to poison it!

Fritos and Cheetos, part of a well balanced diet for birds?

Fritos are their favorite by far. Ingredients are corn, corn oil, and
salt.

I like them too.




https://www.thespruce.com/worst-foods-for-birds-385848

https://healthfully.com/272598-nutritional-value-of-fritos.html

Perhaps not too many Fritos for either you or the birds. Added fats and
salt isn\'t good for any of us.

John :-#)#


You\'d die without fat and salt. Salt is a rare and valued nutrient in
most places. Birds eat corn, which is why scarecrows were invented.

Isn\'t all food \"added\" ?

I assume my backyard birds know what treats they enjoy better than
Melissa Mayntz does. Bird nutrition theories makes as much sense as
people nutrition theories, namely not much.

Your heart is in the right place, but your head just can\'t listen to reason:
https://zupreem.com/avian/toxic-foods-your-bird-should-never-eat/
Click to expand...

That sounds mostly made up. A few Fritos won\'t hurt a bluejay.

It\'s just a bird anyhow.

>Wild birds are wild - they need to survive in the wild (be it the city or not) on their natural diet, which they have spent millions of years evolving on. Humans can only interfere with that.

There\'s nothing natural about San Francisco but the rocks. It was
mostly sand dunes once. Nearly all the green stuff is non-native. I\'m
impressed by how many different kinds of birds thrive here.


--

John Larkin Highland Technology, Inc

Science teaches us to doubt.

Claude Bernard
 
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