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Friends of Midway Atoll

Friends of Midway Atoll

Preserving, protecting, and restoring the biological diversity and historic resources of Midway Atollal Wildlife Refuge

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Home/Explore & Learn/Plants & Wildlife/Birds/Brown Booby

Brown Booby

Hawaiian name: ‘A

Scientific name: Sula leucogaster

Brown Booby
Photo credit: Forest & Kim Starr
  • Life Span: > 20 years
  • Wingspan: 132-155 cm (52-61 in)
  • Breeding Ecology:
    • Pantropical breeding range
    • 2 eggs/clutch (only 1 chick survives); 1 clutch/year (replacement laying occurs)
    • Incubation lasts 42-45 days; chicks fledge after 100 days
    • Populations worldwide have declined dramatically over the past 200 years and may be at only 10% of historic levels.
  • Brown Boobies were the most common booby species at Midway in the 1930s but declined quickly with the introduction of rats (Rattus rattus).

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Friends of Midway Atoll

17 Katrina Lane
San Anselmo, CA 94960

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