I checked 5 eggs yesterday evening after dark. One was a no-go. And 4 seemed to do fine. My torch wasn’t good enough or there was too much stray light to see any. So I’m not very sure.
I would like to look again during the day and take the eggs to a real dark closet, hoping for a better view. If a broody is off the nest this will be fine. But I don’t like the idea to disturb them. So I hope for a opportunity one of the next days.
Who knows until what day I can see veins?
P.S. I found the answer myself on a dutch site with very good pictures : https://www.eierenschouwen.nl/eieren-schouwen/
edit: veins , not vains.
I would like to look again during the day and take the eggs to a real dark closet, hoping for a better view. If a broody is off the nest this will be fine. But I don’t like the idea to disturb them. So I hope for a opportunity one of the next days.
Who knows until what day I can see veins?
P.S. I found the answer myself on a dutch site with very good pictures : https://www.eierenschouwen.nl/eieren-schouwen/
edit: veins , not vains.
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