Is this normal on first day?

[Soheritageland]

I have some 4.5 week old mallards. I put them out in there new home/run and they are just hurled up in a corner for the last 7 hrs. It was pushin 75 degrees today. I'm just worried cuss they want eat or drink

 

[Kevin565]

It sounds pretty normal behavior. What are the lows for tonight? It may be a little nippy for them