Manitoba Peregrines > Radisson Peregrines
Radisson - 2010 / Ivy & Princess
Pam:
Maybe it was Trey who was the one who was fond of the ledge - I recall Tracy saying that he was hatched on the ledge.
Saw one bird on the nestbox as I was leaving work, saw absolutely nothing on the east side today.
bcbird:
Except,... it is Princess who lays the eggs.
TPC, does the male choose the nest with his scrape site, or would the female often choose a different location?
ballywing:
YES!!!! - At least it looks like we won't have that pesky East Ledge to fret about this year! ;D
moka:
WOW! what a lot of info to process.
I agree with Ivy being the ideal substitute. He is a very handsome bird, dark head, lovely white breast, hummm, wonder where he got all his good looks ;D and best of all, he's one of ours. Also can't forget that he seems to know he should NEST ON THE WEST!
bccs:
--- Quote from: bccs on May 14, 2009, 06:50 ---And they don't care about incest.
--- End quote ---
--- Quote from: The Peregrine Chick on May 14, 2009, 09:45 ---Lots of species don't - Ivy was paired up with his sister Lucy for a year, Trey was with his mom for a couple. There a few down south that are half-sibs and nesting mostly happily ... :)
--- End quote ---
--- Quote from: bccs on May 14, 2009, 09:48 ---Doesn't that warp up the gene pool a bit?
--- End quote ---
Only if there are problematic recessive genes that are being passed along and "encouraged" so to speak.
A human example would be hemophilia in the Russian royal family - a nasty recessive gene in a relatively smallish gene pool that wasn't eliminated, but rather reinforced within the pool by marriages between close (not incestuous) family relationships.
Animal example in the other side of the argument. Cheetahs are theorized to have been virtually wiped out by a disease (that's what the experts believe), possibly down to one single pregnant female from whom all of today's cheetahs are related. Cheetahs are for all intents and purposes, clones of one another (note on that at the end). One proof is that they have found that the cats don't have problem with rejection - skin grafts between captive cheetahs showed no rejection (The Genetic Fortitude of Cheetahs) - other isolated species/subspecies/populations show the same evidence. There is debate on whether or not this has contributed to their decline, but other large cat species in the same region have suffered similar declines, so the debate rages. What is known is that as clones they are all equally susceptible to illness which in a normal, genetically diverse population is not a threat to a species survival. What is interesting (and this is the note at the end) is that cheetahs are evolving - their immune systems are showing resistances to diseases we know they didn't have a couple of decades ago, so they are evolving away from being clones, but how long that will take and if they will have the time/habitat/opportunity to do so is unknown. For a really nice look at cheetah's and their survival, check out The Endangered Cheetah
From TPC: tweaked to include the embedded links ...
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version