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yes unless the eggs are eaten then no
1 week
These eggs may not be fertile. Leave them there and see what happens or maybe take them to a vet to be inspected.
If you leave pork out in the sun for a long time, flies will lay eggs on it and it will also go off.
yes it might of been at a later time :-)
Good question, they lay eggs by getting their eggs to be warm and healthy so they sit on them for about 2 hours and then leave them, then after a few hours later they come back and sit on it for 2 hours more It takes like 2 or 3 months for it to hatch
yes it can
NO! Bacteria in cooked eggs grows quickly!
Take them out ASAP!!! they are good for 2 hours...what happens after 2 hours is that the egg loses oxygen.
Depends on the kind of spide. . I would kill the spider with spray or a shoe and stomp/smash the eggs if the spider is poisonous. If it isn't poisonous, leave them alone if you don't mind them. If you don't want them, do the same thing as for poisonous spiders.
Leave them alone. The bluebird will take of them.
I doubt it. Not if she left for 8 hours.