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News: Canadian Peregrines

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bev.:
so an unbanded bird from Alberta can be banded by them, and when it returns here what kind of  a band would we looking for. The biologists try and band as many birds as we can , But it is impossible to get to all nests .

Kinderchick:
Thank you for this information, Alison & TPC. Very interesting to view the FB link. I had no idea about the Padre Island Falcon Survey. Lots of new learning for me, all the time.  :)

The Peregrine Chick:
Some of this will be a repeat of Alison's last post but hopefully with a bit of new info as well  ;)

Peregrines are caught on their wintering grounds on beaches - Padre Island is a giant beach that is a common stop over or final stop for shorebirds and raptors - including peregrines.  Same thing happens in Chile where the tundra birds like Island Girl overwinter. 

When songbirds are caught up here using mist nets, depending on the time oft heyday you will capture unbranded birds (that will then get banded) or you will catch birds hat have already been banded - this is known as a recapture.  For peregrines it isn't mist nets that are used on beaches rather net traps that are remotely launched/activated. There is also a kind of snare trap but I'm not sure they use those in such locations.  The net traps are good on beaches because like snow there is little to get caught on so the trap works the way it is designed which minimizes the risk to the birds.  I should make it clear that the folks that use these nets are very experienced, it is closely regulated by the government - you have to be an experienced permitted bander before you can get a federal or state/provincial permit to capture wildlife and your reason to capture the birds has to be approved by the same agencies and renewed annually.

So back to the peregrines in South Padre, the trapping goes on during migration (don't know how much or how often or if it is just during migration or all through the winter) - migrating birds that are caught on migration are called as "passage birds". In some jurisdictions passage birds are when wild birds can be taken from the wild for falconry purposes - as opposed to raid nests for nestlings.  So unbranded birds that are captured on migration are banded and that is the case in the story Alison posted. If a bird is banded then the bird is considered a recapture and the band information is submitted to the banding agency so the person who banded the bird knows where the bird was when it was recaptured.  This is the same way that songbird population movements are obtained. Easier/faster to catch songbirds than peregrines of course.

Alison:

--- Quote from: Kinderchick on August 08, 2015, 00:08 ---What is meant by the statement that this falcon was "captured & banded during her 1st passage south" & then "recaptured"? How does one "capture" a peregrine falcon & for what reason? Do you think hey meant to say "rescued"? Alison or TPC? ???

--- End quote ---

The Padre Island Peregrine Falcon Survey is a project which has been ongoing for many years. Padre Island, off the coast of Texas, is a stopover for many species of birds during migration, including a number of peregrines. During the spring and fall migrations, peregrines are captured, banded and then released to continue on their way. Sometimes the same birds are recaptured in future migrations and the information recorded.

The project "maintains a unique archive of peregrine samples to help assess the evolution and progression of emerging threats to numerous wildlife species and habitats." according to their website.

I first read about the Padre Island survey years ago in Alan Tennant's book "On the Wing: To the Edge of the Earth with the Peregrine Falcon".

If you take a look at their main website, you can see what the area looks like, and see some of the peregrines they capture and band.

https://www.facebook.com/PadreIslandPeregrines

I don't know how or why this peregrine was recaptured in Clairmont, Alberta. I had never even heard of Clairmont.

Kinderchick:
What is meant by the statement that this falcon was "captured & banded during her 1st passage south" & then "recaptured"? How does one "capture" a peregrine falcon & for what reason? Do you think hey meant to say "rescued"? Alison or TPC? ???

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