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Peregrine Falcon Aerial fight

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Old Thursday 9th May 2019, 10:25   #26
Hauksen
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Hi Jared,

Quote:
Originally Posted by jnicholes View Post
The Peregrine dived in this part of the video.
Very interesting! It looks as if the Peregrine is flying a curve while repeatedly adjusting the exact turn to get into position to swoop on the eagle, which it does at the end!

That's something I haven't noticed before, but it makes a very purposeful impression.

Thanks for sharing that clip! :-)

Regards,

Henning
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Old Thursday 9th May 2019, 11:05   #27
Hauksen
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Hi Chosun,

Quote:
Originally Posted by Chosun Juan View Post
I haven't come across this before. What is this equation? and where does it come from?
In addition to what I posted above, I've just learned that the equation is usually referred to as "Kleiber's law":

https://en.wikipedia.org/wiki/Kleiber%27s_law

It seems that are differing opinions about the exact value of the exponent, and the range of its applicability ... in particular, it might itself be a function of mass.

However, in my opinion that doesn't detract from its great usefullness as a first approximation, especially when comparing birds with a mass that doesn't differ by more than one order of magnitude :-)

Regards,

Henning
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Old Thursday 9th May 2019, 15:32   #28
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A couple of years or so back common buzzards were turning up dead and injured around Lincoln with no obvious signs of having been shot or poisoned. It turned out that it was the local pregrines nesting on the cathedral that were the culprits. The local news channel got some footage and it was clear to see the falcons, who were obviously protecting their nesting territory working as a team to see off the buzzards. The male would make various passing dives at the buzzard and when it turned to take evasive action the larger female used the distraction to slam into it from below. At this point the buzzard would generally bug out. The ferocity of the peregrines attacks must have left significant injuries as several buzzards did not survive.
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Old Thursday 9th May 2019, 21:11   #29
Martin Smyth
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I remember seeing my first Gyr in Cornwall (Cape cornwall 2000), The big falcon was just cruising around, for all the world looked like it was just racing Herring gulls etc, but this flying must of took it over some Pers territory, all of a sudden a pair came screaming off a hidden ledge, and rocketed skywards, then began the feigns and screams, the big female then launched into a power stoop at the Gyr screaming and closing in, the Gyr simply rolled onto her back and just extended those big yellow talons, and the Pers airbrakes and tail fully fanned tail to try and slow her down, in full panic mode, just avoided impaling herself, the Gyr just simply rolled out the other way and silently went on its way to continue its racing gulls, pure exhilaration for 5 minutes, never matched since
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Old Friday 10th May 2019, 17:09   #30
jnicholes
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I saw a fight between two Red Tailed Hawks yesterday. It was very cool to see. I got them circling on video.

I tell you, the birds always fight near my house. I dont know why. Maybe its my pet rabbit they see. Who knows?

Jared
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