Swallow eggs - not sure if they are alive

[animalover501]

Two days ago I found a half ripped apart nest which seemed to have been blown down during a storm the night before, I could tell it was a swallows best as I had seen their nests and eggs before
I looked inside to find four intacted eggs, two egg shells, and one that had a puncture and had turned grey
I don't have an incubator so have them in a cardboard box with some fabric/felt material and a heat mat underneath them. I turn them four times a day and have tried candling them but they are so small and speckled and it is very hard to see them properly

Is there anyone who could tell me if these guys are alive still? I haven't been able to see movement but they haven't turned the colour of the punctured one which gave me a bit of hope

 

[paintedbynature]

Thats an embryo. Id try to research how to incubate them but i think your doing a good job. With the size they are u could try lookig up finch egg incubation im just not sure on a wild species but to me they look alive. Well the bottom one does but i wouldnt give up it would be neat to see if u can hatch them but it would be a lot of care when they hatch. U should see if theres a wildlife rehabber in your area when u hatch them. Or you will be momma birdie blending up insects in a food processor every few hours for a while. If u get to that stage will u release them?

 

[paintedbynature]

oh keep the other one too. I have goose that has changed it concerns me but i keep the egg for sure till i know its dead. Ive thrown out eggs before that could of made it. Do u have any humidty for them if u do a little cut piece of soaked sponge it might be enough i metioned finches even though their eggs are smaller maybe cuz they might have a close moisture need to this size of egg. I hope someone answers u who might know how to do a wild song bird maybe a canary would be best to research on incubation requirements on google since their a domesticated song bird. Good luck

 

[animalover501]

thank you for the reply
I'm glad to know they are alive
I spray little bit of water around the nest when it dries out
I've done a ton of research still figuring things out
I'm only fifteen so this is all very stressful and I have to go back to school soon