Candle them (look up instructions) (it will make you know if they re alive) and make a nest out of fabric (soft) in a box. Keep a heat lamp on them. if they hatch feed them hard dog food soaked in boiled water and put some on the end of your finger and put it down its throat.

They are cold likely because the parents were scared off by your closeness. They will see you long before you see them and will sneak off unseen. Sadly it is too late for those eggs. Please use binoculars to view them from a long distance.

My mum has found an abandoned bird nest. We are 100% sure that the parents are no longer taking care of the eggs.

The are tiny blue eggs.

My mum checked the temperature and said they were stone cold. ( I'm guessing they are dead)

We also don't have an incubator.

If they were still alive, how could I have looked after them. Also wear could I have put them if I didn't have an incubator.