Other Peregrine Projects > Canadian Peregrines
AB / Red Deer - Telus Tower - 2010-13
The Peregrine Chick:
--- Quote from: Kinderchick on June 12, 2012, 13:05 ---
--- Quote from: BirdLover on June 08, 2012, 20:55 ---...Unfortunately, no one has read the band on the new female at Red Deer so far. The small clutch (3) suggests she may be breeding for her first time. We may get a chance to read her band in the coming weeks - most likely she is from Alberta but may be from as far away as Winnipeg!...
--- End quote ---
I didn't know that a clutch of 3 was considered to be a small clutch. I thought that 3 would be considered an average clutch, with 4-5 a larger clutch. Does the size of the clutch depend both on the age and experience of the birds, TPC, as well as on the genetic make-up of the birds? ???
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Okay, in the north and Mexico, mean clutch size is 3.0 to 3.3 eggs (so 3 eggs is the norm). Southern Canada and continental USA (where anatum subspecies lives) it is 3.72 eggs, so 3-4 is the norm. Aleutian Islands of Alaska mean is 3.8, so 4 is the norm more times than not. Clutches of 5+ eggs is considered occasional about 1% of all nests.
That is a general statement. For some pairs 5 is the norm, and anything under that is small for them. For others 3 is the norm, so 4 eggs would be considered large for them. Larger is always the issue/concern, feeding 1+ more mouth is obviously harder (requires exponentially more labour, time and resources) than feeding 1+ fewer mouths.
Kinderchick:
--- Quote from: BirdLover on June 08, 2012, 20:55 ---...Unfortunately, no one has read the band on the new female at Red Deer so far. The small clutch (3) suggests she may be breeding for her first time. We may get a chance to read her band in the coming weeks - most likely she is from Alberta but may be from as far away as Winnipeg!...
--- End quote ---
I didn't know that a clutch of 3 was considered to be a small clutch. I thought that 3 would be considered an average clutch, with 4-5 a larger clutch. Does the size of the clutch depend both on the age and experience of the birds, TPC, as well as on the genetic make-up of the birds? ???
bcbird:
--- Quote from: RCF on June 08, 2012, 22:17 ---Good news BL!! 8) I sure hope they or somebody will be able to read her band soon, it would be cool if she were from Manitoba. :)
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I can't help but hope it could be Cassie from U of A, 2008 (I think). Radisson, her mother, is from Manitoba.
RCF:
RCF:
I just caught the end of a feed. :)
Video - http://youtu.be/0mv0XVxuTf0
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