Renandeli, the only difference I can see between those two is that the tail feathers on number 2 seem to be darker than number one.renandeli wrote:Now I compare two pictures (only) to each others - there is about one hour between. The eagle number 1 left at 19:39 and the number 2 came to the nest at 19:42.
Do you see any diffrence? The cam angle is the same, both are in same position... how about the tail weathers?? Or something else
1 at 18:41
2 at 19:57
The colour of the tail weathers can be the same, the sun is giving light from different angle,.. thought the 'sun shine' is soft, and there are no dark shadows.Jo UK wrote: Renandeli, the only difference I can see between those two is that the tail feathers on number 2 seem to be darker than number one.
All else looks the same, to me.
But the heads may be slightly in different position. That is why measured the lenghts from the chest to tail top..Jo UK wrote:Oh, you are clever to notice that, renandeli.
So, I zoomed the page to 150% to make it easier to see beak tip and tail feathers.
Then I got the tape measure from the sewing box.
In the first pic I measure 95mm beak to tail tip
In the second pic it was 106mm beak to tail tip.
Sometimes the birds sit on eggs that will not hatch- their hormones are telling them to incubate, but they can't tell that the egg is not viable. We will have to wait and see - collect data not guesses.Jo UK wrote:As bociany has just reminded us, Urmas thought it unlikely, or impossible, for these eggs to hatch. So this adult bird just sits on the eggs from instinctive behaviour?
Miracles happen, though. Maybe this bird knows things about the eggs tht we don't know.
We never know as much as they by themselves..what their knowledge ever is, instincts, genes, practice, learning too, imitating etc. But people can help rare birds in many ways, we have other kind of knowlegde. But that's a different question.Jo UK wrote:As bociany has just reminded us, Urmas thought it unlikely, or impossible, for these eggs to hatch. So this adult bird just sits on the eggs from instinctive behaviour?
Miracles happen, though. Maybe this bird knows things about the eggs tht we don't know.
I think it is important to follow this nesting, it gives information too what ever happens later, it will be different to a succesfull nesting without too big problems, but not less valuable or less usefull, ..bociany wrote:Sometimes the birds sit on eggs that will not hatch- their hormones are telling them to incubate, but they can't tell that the egg is not viable. We will have to wait and see - collect data not guesses.
