Advice for moving ducklings out of the house

[pinksapphire]

I have three 11 day old runner ducklings that I am brooding in a box in the house and feel they have outgrown there brooder and need more space to move and explore plus they are messing up their brooder so fast.
I have a glass house that I would like to move them out to so they will be sheltered from any wind and rain.
I will place their heat source in an insulated box so it will be cosy.
Currently day time temps are 59° Fahrenheit + and nighttime are around 44 to 50
Do you think this is sufficient temperatures for them?

 

[Starrponies]

As long as they still have a heat source that still gets warm enough under it. they will be ok. I've had to do it with chickens before