Heat and Nest Boxes?

[Lynn Ackerman]

Dear Cobirders,

 

I have a nest box with tree swallow babies.  I am concerned for their safety in this heat wave we are having.  I see the parents continuing to feed so it appears that they are surviving, but I wonder how long they can endure this heat.  There is no way to provide shade.  Does anyone know if they will be OK in this extended heat?

 

Thank you for any input,

Lynn Ackerman

Highlands Ranch