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Bird name:

Masked Booby

Sula dactylatraOrder: PELECANIFORMES Family: Booby and Gannets (Sulidae)
Codes: Common Name: MABO Scientific Name: SULDAC ITIS Taxonomic No.: 174699
Masked Booby Breeding Male Head Illustration

Head

Topo Map: Gull-like Head
  • Bill Shape: Dagger
  • Eye Color: Dark brown in chicks, to lead gray in juveniles; Yellow at maturity.
  • Head Pattern: Masked
  • Crown Color: White
  • Forehead Color: White
  • Nape Color: White
  • Throat Color: White with black facial skin just below bill.
  • Cere color: No Data
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Masked Booby Breeding Male Body Illustration

Body

Topo Map: Gull-like Body
  • Length Range: 66-86 cm (26-34 in)
  • Weight: 1451 g (51.2 oz)
  • Size: Size 4. Large (16 - 32 in)
  • Color: White, Black
  • Underparts: White
  • Upperparts: White with dark brown trailing edge on wings.
  • Back Pattern: Solid
  • Belly Pattern: Solid
  • Breast Pattern: Solid
Masked Booby Breeding Male Flight Illustration

Flight

Topo Map: Gull-like Flight
  • Flight Pattern: Alternates several deep flaps with glides.
  • Wingspan Range: 152-157 cm (60-62 in)
  • Wing Shape: Pointed-Wings, Long-Wings
  • Tail Shape: Pointed Tail
  • Tail Pattern: Solid
  • Upper Tail: Black
  • Under Tail: Black
  • Leg Color: Yellow-gray
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Family Booby and Gannets (Sulidae)_blue
Species Sula dactylatra
Length26 - 34 Inches
Wingspan61 Inches

Masked Booby

Masked Booby: Large seabird with white body, black trailing edge on wings, pointed black tail. Head has black mask and long, pointed, yellow bill. Legs and feet are yellow-gray. Plunge dives from 40 feet for small squid and flying fish. Alternates strong rapid wing beats with glides.

● Song: Generally silent

● Foraging & Feeding: Masked Booby: Eats primarily fish and squid; forages by plunge diving, sometimes from as high as 40 feet and to depths of 6 to 10 feet underwater.

● Breeding & nesting: Masked Booby: One or two chalky white eggs are laid in a shallow ground depression with a slight rim of pebbles. Incubation ranges from 38 to 49 days and is carried out by both parents.

● Similar species: Masked Booby: Nazca Booby has an orange bill. Red-footed Booby is smaller, has white tail, white inner secondaries, pink facial skin, and red legs.

Flight Pattern

Alternates several deep flaps with glides.
Masked Booby Breeding Male Body Illustration
● Range & Habitat: Masked Booby: Breeds in Bahamas and West Indies, and on other islands in tropical Atlantic, Indian, and Pacific oceans. Rare visitor to coasts of Florida, Louisiana, and Texas, and in Gulf Stream to the Carolinas. Pelagic, only comes ashore to breed.
BreedingMonogamous, Colonial
PopulationYes but uncommon
MigrationNonmigratory
Weight51.2 Ounces
Gull-like HeadX
Gull-like BodyX
Gull-like FlightX
4 and 6 letter alpha codesX

The four letter common name alpha code is is derived from the first two letters of the common first name and the first two letters of common last name. The six letter species name alpha code is derived from the first three letters of the scientific name (genus) and the first three letters of the scientific name (species). See (1) below for the rules used to create the codes..

Four-letter (for English common names) and six-letter (for scientific names) species alpha codes were developed by Pyle and DeSante (2003, North American Bird-Bander 28:64-79) to reflect A.O.U. taxonomy and nomenclature (A.O.U. 1998) as modified by Supplements 42 (Auk 117:847-858, 2000) and 43 (Auk 119:897-906, 2002). The list has been updated by Pyle and DeSante to reflect changes reported by the A.O.U from 2003 through 2006.

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ITIS CodesX

The Integrated Taxonomic Information System (ITIS) was established in the mid-1990�s as a cooperative project among several federal agencies to improve and expand upon taxonomic data (known as the NODC Taxonomic Code) maintained by the National Oceanographic Data Center (NODC), National Oceanic and Atmospheric Administration (NOAA).

To find the ITIS page for a bird species go to the ITIS web site advanced search and report page at http://www.itis.gov/advanced_search.html. You can enter the TSN or the common name of the bird. It will return the ITIS page for that bird. Another way to obtain the ITIS page is to use the Google search engine. Enter the string ITIS followed by the taxonomic ID, for example "ITIS 178041" will return the page for the Allen's Hummingbird.

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Parts of a Standing birdX
Head Feathers and MarkingsX
Parts of a Flying birdX