This Great Blue was returning from a test flight, and the sibling was mystified.
This is the young Great Blue I photographed who almost crash landed on me. After looking around me, and the trail, he moved to a high branch, took a leap, and went right back to the safe place he knew.
The other was still nest bound but excited to see the flight, and return.
Note: Since these shots were taken the second bird has learned to fly. Both were missing when I went in the other day. Most likely they explore during the day now but return at night.