These girls feathered to start going outside for acclimation with the 5 adults?

They're all (including the others not pictured) fully feathered, I just am nervous about shocking them with Michigan spring temperatures. It's only getting up to about 30 degrees today and I keep my house at 60. Was hoping it'd be more consistently in the upper 40s/low 50s by now but Michiganders'll know that was probably wishful thinking on my part.