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- #121
- Nov 9, 2013
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'How long is he off the nest each day?' He isn't! And one of the great successes of this Project is that we have -- 'BYC Mating Season in Australia' -- a complete record of a hatch, probably the first ever.
So, one of The Fuzzy Bits is the 'days of laying,' which lead up to the beginning of incubation. But there is a point at which a male has a pile of big green eggs in front of him, and he settles himself down, and apart from getting up to turn the eggs a number of times a day, he does nothing but sit. Doesn't drink; eat; or poop.
'And will the current chicks all go on their way?' -- eventually yes. But it's another fuzzy zone. We have observed six clutches over thirteen years -- that is, at length here in the house-clearing. We've observed lot of clutches elsewhere.
This ties in with our interest in understanding what constitutes 'maturity.' For example, on a number of occasions, I've observed a female with an entourage of males. One is likely the prospective consort. But sometimes there are birds that I'd guess are quite young males.
Take another perspective on this, Ursuline: imagine that you are going into the Darwinian arena with females like Greedy (the only ever double-alpha female) and Felicity. You start your third year of life in the spring. You are only four or five months beyond your last baby feathers. Now, I've seen Greedy Emu single-handedly attack a mob of twelve emus. If lil ol' you gets in her way, she'll thrash a pillow full of feathers off you in a heartbeat.
So perhaps young birds have a year or two between physical maturity and 'social' maturity?
So, one of The Fuzzy Bits is the 'days of laying,' which lead up to the beginning of incubation. But there is a point at which a male has a pile of big green eggs in front of him, and he settles himself down, and apart from getting up to turn the eggs a number of times a day, he does nothing but sit. Doesn't drink; eat; or poop.
'And will the current chicks all go on their way?' -- eventually yes. But it's another fuzzy zone. We have observed six clutches over thirteen years -- that is, at length here in the house-clearing. We've observed lot of clutches elsewhere.
This ties in with our interest in understanding what constitutes 'maturity.' For example, on a number of occasions, I've observed a female with an entourage of males. One is likely the prospective consort. But sometimes there are birds that I'd guess are quite young males.
Take another perspective on this, Ursuline: imagine that you are going into the Darwinian arena with females like Greedy (the only ever double-alpha female) and Felicity. You start your third year of life in the spring. You are only four or five months beyond your last baby feathers. Now, I've seen Greedy Emu single-handedly attack a mob of twelve emus. If lil ol' you gets in her way, she'll thrash a pillow full of feathers off you in a heartbeat.
So perhaps young birds have a year or two between physical maturity and 'social' maturity?