When will both owlets leave the nest for the first time?

Enter your guess below.

At around six weeks of age young Great Horned Owls start to move onto nearby branches, a process called "branching." 

When do you think that both owlets will first be perched outside the nest bowl at the same time? The person who guesses closest to the first record of both owlets perched off of the nest substrate will win an embroidered Cornell Lab stadium blanket made of warm polar fleece.

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