15.36 -aeration
15.40 - continues to incubate without changing position
16.01 -preening, aeration
16.07 -continues to incubate without changing position
16.39 - aeration, PS
16.42 - continues to incubate without changing position
17.15 -preening, aeration
17.22 -continues to incubate , change of position
17.40 - aeration, organizing twigs
17.49-continues to incubate , change of position