Yes Stucki. That is how the Perching Bird works.
The Perching Bird starts perched wherever you place them.
Then when the player gets within the flyaway distance (or an editable timer goes off- if the bird is set to not fly away from the player) they fly up to the sky and fly around to random Sky Targets.
After an editable timer they will fly down to a random Perch Target and perch again. Then this behavior will repeat.