Sorry it didn't work out. I also think you did the right thing. I would be afraid of what might happen to any ducklings hatched in a burrow. If there were more tunnels they may have gone down them and gotten lost.
Some people have hatched eggs under lamps. I don't know much about it but maybe you can look into it.
Some people have hatched eggs under lamps. I don't know much about it but maybe you can look into it.
