The eaglet has been alone since 4.11, when Maia left.
5:52 Maia comes back.
5:54 she shows the eaglet a rodent that has been in the nest all along.
Eaglet takes it right away and swallows, but the rodent is not going down easily.
So at 5:56 eaglet lets it come out again (as pictured) and then swallows it again.
5:58 Maia leaves the nest.