Children (21 direct children, 266 direct and indirect children):
Pseudobulweria
(tree size 7)
Fulmar
(tree size 7)
Fulmarus
Macronectes
(tree size 6)
Giant petrel
Procellaria
(tree size 47)
Pterodroma
(tree size 57)
Gadfly petrel
Puffinus
(tree size 72)
Bulweria
(tree size 4)
Calonectris
(tree size 7)
Pachyptila
(tree size 17)
Procellariinae
Aphrodroma
(tree size 1)
Daption
(tree size 4)
Halobaena
(tree size 1)
Pagodroma
(tree size 4)
Thalassoica
(tree size 1)
Ardenna
(tree size 7)
Pterodromoides
(tree size 1)
Lugensa
(tree size 1)
Pachyptilinae
Fulmarinae
Argyrodyptes
(tree size 1)