Soon we were standing right next to a masked booby that clearly did not recognize man as the greatest killer of all time.

The island is a breeding site for the Masked Booby.

I had better luck with a masked booby.

Masked Boobies have also been recorded breeding there.

Comes frorn the rear end of two birds, the masked booby and the guanay.

We passed a couple of masked boobies making an abstract nest: a circle of very small rocks.

Masked Boobies are spectacular divers, plunging diagonally into the ocean at high speed.

Studies from Wake Forest University on the masked boobies illuminate curious tendencies to kill siblings.

We saw schools of Pacific bonito tearing into baitfish and masked boobies that tucked their wings before slicing beneath the surface.

At that very moment Hank was walking right past a pair of goofy-looking masked boobies, brilliant white except for the dark mask around the yellow-orange bill.

It turns out that the masked boobies that were placed under the care of blue-footed booby parents committed siblicide less often than they would normally.

The Masked Booby is silent at sea, but has a reedy whistling greeting call at the nesting colonies.

In a study, the chicks of blue-footed and masked boobies were switched to see if the rates of siblicide would be affected by the foster parents.

Masked Booby (Sula dactylatra)

In another experiment, Blue-footed Booby chicks were swapped into nests of the Masked Booby.

The Masked Booby (Sula dactylatra) is a large seabird of the booby family, Sulidae.

The Nazca Booby was formerly regarded as a subspecies of the Masked Booby but is now recognized as a separate species.

Compared to other species of boobies such as the Blue-footed Booby, siblicide is obligatory in the Masked Booby.

Breeding biology of Masked Boobies (Sula dactylatra tasmani) on Lord Howe Island, Australia.

This is suggested by studies into the Common Grackle, Quiscalus quiscula and the Masked Booby, Sula dactylatra.

The Nazca Booby co-occurs with the Masked Booby on Clipperton Island, where they may rarely hybridize.

The Masked Booby nests in small colonies, laying two chalky white eggs on sandy beaches in shallow depressions, which are incubated by both adults for 45 days.

The island has been identified as an Important Bird Area by BirdLife International because of the large breeding colony of Masked Boobies, with 110,000 individual birds recorded.

Blue-footed boobies (Sula nebouxii) are less likely to commit siblicide and if they do, they commit it later after hatching than masked boobies (Sula dactylatra).

First described by French naturalist René-Primevère Lesson in 1831, the Masked Booby is one of six species of booby in the genus Sula.

Masked Booby (Sula dactylatra)

The Masked Booby (Sula dactylatra) is a large seabird of the booby family, Sulidae.

Breeding biology of Masked Boobies (Sula dactylatra tasmani) on Lord Howe Island, Australia.

This is suggested by studies into the Common Grackle, Quiscalus quiscula and the Masked Booby, Sula dactylatra.

The island's Masked Boobies are of the western Indian Ocean subspecies (Sula dactylatra melanops), of which Tromelin is a stronghold.

Blue-footed boobies (Sula nebouxii) are less likely to commit siblicide and if they do, they commit it later after hatching than masked boobies (Sula dactylatra).

However, this taxon has more recently (Priddel et al. 2005) been considered to be a subspecies of the Masked Booby, Sula dactylatra tasmani, still extant as a breeding species on Lord Howe Island, and more recently described as S. d. fullagari.

The Tasman Booby (Sula dactylatra tasmani) or Lord Howe Masked Booby is a large seabird of the gannet family, Sulidae, described from bones found on Norfolk and Lord Howe Islands in the Tasman Sea (van Tets et al. 1988).