6-7 Week Old Buff Orpingtons

[PrudentPrepper]

lol, I was hoping he'd get better with practice

 

[Family Affair]

I have 6 7 week and 3 days old buff Orpingtons. I live in the high desert of California where daytime temperatures are between 70 and 80+ degrees. I take the chics outside during the day but can I leave them outside at night when the temperatures are 50 degrees. Can I leave them outside at night?