Author Topic: Radisson - 2010 / Ivy & Princess  (Read 449858 times)

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Offline The Peregrine Chick

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Re: Radisson - 2010 / Ivy & Princess
« Reply #645 on: April 04, 2010, 02:35 »
Treys dad's mate overwintered!!!!actually stayed here????
How could this be? 

Madame was from Cedar Rapids, Iowa and she was a mix of peregrine subspecies, including 1 or 2 European non-migratory subspecies - Scots and Spanish I believe.  And she overwintered from the time we first spotted her in November/December 1990 (she hatched in 1989) until I last saw her in 2005, a year after she was forced off the Radisson territory by Princess.  She was the mate of all four of our resident Radisson males - Pop, T-Rex, Simba and Trey.  She is/was also Trey's Mom.


Something that I've been thinking about and hoping you can answer.  Do Peregrine's go through menopause, so to speak.  Is there an age where the reproduction instinct fades away because of dwindling hormones and don't have the instinct to return to mate?

I'm afraid I don't know Stormy, if there is, could be that menopausal females my just decide to turn left instead of right on their way home, releasing the territory to whomever is there to take over.  I'd be surprised if that was the case though, since they generally don't live that long <10 years I suspect that their wiring to reproduce doesn't have an offswitch though the biology may not be as fecund as time goes along ...

So "they " just refers to females?  I did think there was a posting about living to 15 years - or was that just males or my faulty memory?

Sorry, should have been clearer - the key word in the sentence is "generally".  Most peregrine don't live into their teens, heck half don't make it to their first year.  Most that do make it to year 2 don't make it past 10 years old.  That applies for males and females.  Oldest bird in the wild is I believe a male who made it to 19 years plus some months I believe.  Survivorship for Falcon peregrinus anatum is about 80% per year after second year.  That means that at year 10, 11% of all the birds hatched that same year are still alive, at year 20, only 1% are still alive.  Median age is 4.5 years for both genders.  Most of our breeding birds last a wee bit longer than that. 

All of our Manitoba-hatched birds breeding outside the province are female.  Our Manitoba-hatched males have only been found nesting in Manitoba, none outside the province.  We have had some captive-bred males released from Manitoba that have gone on to nest elsewhere, but not males hatched in Manitoba, or none that we have had reported to us.

Offline des

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Re: Radisson - 2010 / Ivy & Princess
« Reply #644 on: April 03, 2010, 23:26 »
I also wondered if maybe Princess knows/senses that Trey won't be back?

Couldn't tell you, have no idea if they travel to the same area or even if they travel via the same route.  Last year they were back together but that was an anomaly I haven't seen elsewhere in our history, usually they come in separately.  Trey's dad came back at the end of Feb one year, way before anyone else did/has - his mate overwintered so she was there waiting but they didn't nest any earlier that year ...

Treys dad's mate overwintered!!!!actually stayed here????
How could this be?
« Last Edit: April 04, 2010, 02:08 by The Peregrine Chick »

Offline des

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Re: Radisson - 2010 / Ivy & Princess
« Reply #643 on: April 03, 2010, 23:11 »
Something that I've been thinking about and hoping you can answer.  Do Peregrine's go through menopause, so to speak.  Is there an age where the reproduction instinct fades away because of dwindling hormones and don't have the instinct to return to mate?

I'm afraid I don't know Stormy, if there is, could be that menopausal females my just decide to turn left instead of right on their way home, releasing the territory to whomever is there to take over.  I'd be surprised if that was the case though, since they generally don't live that long <10 years I suspect that their wiring to reproduce doesn't have an offswitch though the biology may not be as fecund as time goes along ...

So "they " just refers to females?  I did think there was a posting about living to 15 years - or was that just males or my faulty memory?
« Last Edit: April 04, 2010, 02:10 by The Peregrine Chick »

Offline Ellie

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Re: Radisson - 2010 / Ivy & Princess
« Reply #642 on: April 03, 2010, 23:09 »
Thank you Tracy.  I knew I had seen it before but guess I forgot where to look for it  Nothing unusual for me! :-*

Offline The Peregrine Chick

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Re: Radisson - 2010 / Ivy & Princess
« Reply #641 on: April 03, 2010, 21:49 »
Something that I've been thinking about and hoping you can answer.  Do Peregrine's go through menopause, so to speak.  Is there an age where the reproduction instinct fades away because of dwindling hormones and don't have the instinct to return to mate?

I'm afraid I don't know Stormy, if there is, could be that menopausal females my just decide to turn left instead of right on their way home, releasing the territory to whomever is there to take over.  I'd be surprised if that was the case though, since they generally don't live that long <10 years I suspect that their wiring to reproduce doesn't have an offswitch though the biology may not be as fecund as time goes along ...

I also wondered if maybe Princess knows/senses that Trey won't be back?

Couldn't tell you, have no idea if they travel to the same area or even if they travel via the same route.  Last year they were back together but that was an anomaly I haven't seen elsewhere in our history, usually they come in separately.  Trey's dad came back at the end of Feb one year, way before anyone else did/has - his mate overwintered so she was there waiting but they didn't nest any earlier that year ...

Tracy I have just perused all of the March Observations as I thought there was a family tree of sorts but found that it was a "who nested with who etc".  I wanted to find out how old Trey is .........seven sticks in my head for some reason but when I find that Ivy is 5 years old that really doesn't make any sense.  So to keep me from overworking my brain could  you please let me know how old he is.  Thanks. ??? ;D

Trey, if he returns this year will be 14 years old.  Princess is 8 years of age.
And if you want to look at the first of the family trees - http://www.species-at-risk.mb.ca/pefa/p-trees.html

Offline Ellie

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Re: Radisson - 2010 / Ivy & Princess
« Reply #640 on: April 03, 2010, 20:48 »
Tracy I have just perused all of the March Observations as I thought there was a family tree of sorts but found that it was a "who nested with who etc".  I wanted to find out how old Trey is .........seven sticks in my head for some reason but when I find that Ivy is 5 years old that really doesn't make any sense.  So to keep me from overworking my brain could  you please let me know how old he is.  Thanks. ??? ;D

Offline Stormy

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Re: Radisson - 2010 / Ivy & Princess
« Reply #639 on: April 03, 2010, 19:44 »
I managed to find my way back to the board.  Thanks Tracy, I have my account up and running again.

Something that I've been thinking about and hoping you can answer.  Do Peregrine's go through menopause, so to speak.  Is there an age where the reproduction instinct fades away because of dwindling hormones and don't have the instinct to return to mate?

I also wondered if maybe Princess knows/senses that Trey won't be back?

Change always sucks and I would miss Trey very much, but it would be nice to have one more season with him and Princess.   :)

Offline moka

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Re: Radisson - 2010 / Ivy & Princess
« Reply #638 on: April 03, 2010, 18:27 »
All of our human emotions projected on these poor birds...  :-X I also feel sorry for Jules, such a gorgeous peregrine, sitting all by her lonesome waiting for Ivy, that flirt  >:(

However this all pans out, I know this gang, we will be watching those eggs and cheering, no matter the parents.

BUT, in the depths of our hearts, we are shouting TREY, TREY, TREY  :'( where are you, sweet thing?

Offline allikat

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Re: Radisson - 2010 / Ivy & Princess
« Reply #637 on: April 03, 2010, 17:36 »
Well, I'm a groupie.....and I'm waitin' until the curtain goes up.   :P

Offline Loriann

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Re: Radisson - 2010 / Ivy & Princess
« Reply #636 on: April 03, 2010, 17:31 »
but there are always 'groupies' waiting around for the late-comers.. 

Offline ballywing

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Re: Radisson - 2010 / Ivy & Princess
« Reply #635 on: April 03, 2010, 17:29 »
True!! - BUT if a Rockstar makes his entrance too late, he just might miss the show!! :o

Offline allikat

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Re: Radisson - 2010 / Ivy & Princess
« Reply #634 on: April 03, 2010, 17:20 »
Yes that...... we have also discussed that he's just wanting to make his "GRAND" entrance as it's all about him right now.

When you're a rockstar.....it's all about you making your way to the stage!

Offline bccs

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Re: Radisson - 2010 / Ivy & Princess
« Reply #633 on: April 03, 2010, 17:18 »
Oh yes TPC, Allicat, Loriann and I have all noticed that Princess has not " bonded " to Ivy in the same way she has done with Trey.
Seems to us, that if there was some sharing between the two of them, we would have seen overt behaviour from them. Princess is still not cuddling with him as she has/does with Trey.
( hoping that Jules takes a mate, and leaves Ivy in the lurch when/if Trey gets back. :P)
« Last Edit: April 03, 2010, 17:22 by bccs »

Offline ballywing

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Re: Radisson - 2010 / Ivy & Princess
« Reply #632 on: April 03, 2010, 17:16 »
Ooooh - So you just never know!!! .....Not saying that Trey isn't entitled to a year off now & then, change of scenery maybe - but it would just be so much better if he could let us know!!  :P

Interesting food for thought TPC! ...We don't know what it all means, but we'll sure as heck be finding out in the next while!!  ;D

(Personally hoping that Princess is still waiting for Trey and that when he does arrive - SOON - Ivy will go back to Jules who's all by her lonesome over in the West End!  :-\ -Then all will be as it should!  ;D

Offline bccs

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Re: Radisson - 2010 / Ivy & Princess
« Reply #631 on: April 03, 2010, 17:14 »
Gotta tell ya, Allikat and I have been talking. We both agree the Trey is in the south, cigar in one hand, mai tai in another and a flock of young nubile female falcons paying homage to him.
Picture it, he's laughing saying.... haha, princess, stop nagging, Vesper, shut ;D ;D yer yap
And maybe, just maybe saying see y'all in a couple of days.
« Last Edit: April 03, 2010, 17:20 by bccs »