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Difference between revisions of "Magnificent Frigatebird" - BirdForum Opus

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;Fregata magnificens
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[[Image:Magnificent_Frigatebird.jpg|thumb|550px|right|Female (above) and Male in mating display<br />Photo &copy; by {{user|Ian+Jeanneret|Ian Jeanneret}}<br/>Santa Cruz, [[Galapagos]], [[Ecuador]]]]
[[Image:Magnificent_Frigatebird.jpg|thumb|350px|right|Photo by Ian Jeanneret]]
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;[[:Category:Fregata|Fregata]] magnificens
==Description==
 
</i><p>
 
==Identification: ==
 
38-40" (97-102 cm). W. 7'6" (2.3 m). Black with very long, narrow, pointed wings, deeply forked tail, and long hooked bill. Male has brilliant red throat pouch in breeding season, which it inflates to huge size during courtship. Female has white breast. Young have white heads and underparts.
 
  
<p>
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==Identification==
==Habitat: ==
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[[Image:Dabs - Frigatebirds.JPG|thumb|350px|right|Adult male, Adult female, Immature male, Juvenile<br />Photo &copy; by {{user|DABS|DABS}}<br />La Brea, [[Trinidad]], March 2018]]
Open ocean and inshore waters. Nests on mangrove islands.
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[[Image:Magnificaent Frigatebird 72 2263.jpg|thumb|350px|right|Photo &copy; by {{user|STEFFRO1|STEFFRO1}}<br />Fernandina, [[Galapagos Islands]], August 2015]]
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*Length: 35–44.9 in or 89–114 cm
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*Wingspan: 85.4–88.2 in (about 7 feet) or 217–224 cm
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Females significantly larger than males, and [[Caribbean]] populations generally a little larger than more westerly populations.
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Both sexes and all age-groups have:
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*Long, hooked bill
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*Mostly black plumage
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*Long pointed wings with characteristic profile
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*Long, deeply forked tail often held closed<br />
  
<p>
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'''Male'''
==Nesting: ==
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*All black with purple gloss
1 white egg placed in a flimsy nest of sticks in bushes or trees or on rocks.
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*Scarlet throat pouch that can be inflated during mating displays<br />
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'''Female'''
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*Black head and back
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*White breast does not reach anywhere near the bill
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*Brown band on wings
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*Inconspicuous blue eye ring<br />
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'''Immature'''
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White head and underparts, rest of bird black
  
<p>
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====Similar species====
==Range: ==
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On a sitting female, black on the chin and throat makes a dark arrow pointing into the white breast, and on a flying bird, the border seems perpendicular to the flight direction. On a female [[Great Frigatebird]], the white breast points into the black, almost reaching the bill. Up close, look for different color of eye ring<br />Adult male has different color gloss on mantle when seen up close, and lacks the paler line on upper wing usually seen on Great Frigatebird. If visible, leg color should be diagnostic.<br />Juvenile Great Frigatebird is usually yellow/orange/tawny on head and upper breast, but the lack of that is not a completely safe field mark for Magnificent.
Gulf of Mexico to southern Brazil; Cape Verde Islands; Baja California to Peru.  
 
  
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==Distribution==
==Voice: ==
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[[United States]]; western [[Mexico]]; [[Central America]]; the [[Caribbean]]; northern [[South America]] to [[Brazil]] in the east and to [[Ecuador]] and [[Galapagos]] in the west; and on [[Cape Verde Islands]].  
Usually silent at sea; harsh guttural calls during courtship.
 
  
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==Taxonomy==
==Discussion: ==
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====Subspecies====
Frigatebirds, also called man-o'-war-birds, are among the most agile of birds on the wing. They have the largest wingspread in proportion to weight of any bird. In addition to stealing fish from other seabirds, their most famous method of obtaining food, they can soar for hours and often dip down to the surface to pick fish and other marine animals from the water, or skim past a breeding colony of boobies to snatch young birds from their nests. Frigatebirds never alight on the ground or water; their short legs and narrow wings make it difficult for them to take off except from a height, such as the limb of a tree or a rock. Magnificent Frigatebirds do not nest on the Pacific Coast of the United States, but those that wander northward to California (and casually to southern Alaska), probably come from colonies on islands off the western coast of Mexico.</i>
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Two subspecies are recognized<sup>[[#References|[1]]]</sup>.
==Identification==
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*''F. m. rothschildi'' - the eastern Pacific (breeding from [[Mexico]] south to [[Ecuador]]), the western Atlantic (breeding Mexico, [[Florida]] and the [[Caribbean]] south to [[Brazil]]), and in the eastern Atlantic (breeding on the [[Cape Verde Islands]], where now very rare or extirpated)
Photographed in Santa Cruz, Galapagos.
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*''F. m. magnificens'' - [[Galapagos]] Islands
==Magnificent Frigatebird==
 
Found commonly in tropical western Atlantic and eastern Pacific both coastal and pelagic. Often seen flying low over water, at other times soaring sky-high. Feeds by plucking morsels from the surface or by chasing other birds including terns, gulls, and boobies, forcing them to disgorge their food. Has a distinct quality of "flying dinosaur".
 
  
''Originally posted by '''njlarsen'''''
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==Habitat==
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Pelagic species; at sea, and commonly along coastlines.  Is not bothered by human settlement, and may benefit from human activities such as fishing and fish cleaning.
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==Behaviour==
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====Diet====
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Diet includes fish, especially flying fish, which are taken in flight.  Will attack other seabirds to steal their catches or try to force them to disgorge their meals. Will also snatch offal, such as fish entrails discarded by fishermen, from the surface of the sea.
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====Breeding====
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The male attends the nest for about 100 days, while the female stays with the single offspring for approximately another year; most of that time, the young stay in the nest. The female is therefore only able to breed every other year, while males may breed every year or maybe even more often in different colonies. 
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==References==
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#{{Ref-Clements6thAug21}}#Audubon Guides
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#BBC Nature
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{{ref}}
 
==External Links==
 
==External Links==
*[http://www.birdforum.net/pp_gallery/showgallery.php?mcats=all&si=Fregata%20magnificens&what=allfields&name=&when=&whenterm= View more images of Magnificent Frigatebird in the gallery]
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{{GSearch|"Fregata magnificens" {{!}} "Magnificent Frigatebird"}}
[[Category:Birds]]
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{{GS-checked}}1
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<br />
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<br />
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[[Category:Birds]] [[Category:Fregata]]

Latest revision as of 19:28, 31 May 2023

Female (above) and Male in mating display
Photo © by Ian Jeanneret
Santa Cruz, Galapagos, Ecuador
Fregata magnificens

Identification

Adult male, Adult female, Immature male, Juvenile
Photo © by DABS
La Brea, Trinidad, March 2018
Photo © by STEFFRO1
Fernandina, Galapagos Islands, August 2015
  • Length: 35–44.9 in or 89–114 cm
  • Wingspan: 85.4–88.2 in (about 7 feet) or 217–224 cm

Females significantly larger than males, and Caribbean populations generally a little larger than more westerly populations. Both sexes and all age-groups have:

  • Long, hooked bill
  • Mostly black plumage
  • Long pointed wings with characteristic profile
  • Long, deeply forked tail often held closed

Male

  • All black with purple gloss
  • Scarlet throat pouch that can be inflated during mating displays

Female

  • Black head and back
  • White breast does not reach anywhere near the bill
  • Brown band on wings
  • Inconspicuous blue eye ring

Immature White head and underparts, rest of bird black

Similar species

On a sitting female, black on the chin and throat makes a dark arrow pointing into the white breast, and on a flying bird, the border seems perpendicular to the flight direction. On a female Great Frigatebird, the white breast points into the black, almost reaching the bill. Up close, look for different color of eye ring
Adult male has different color gloss on mantle when seen up close, and lacks the paler line on upper wing usually seen on Great Frigatebird. If visible, leg color should be diagnostic.
Juvenile Great Frigatebird is usually yellow/orange/tawny on head and upper breast, but the lack of that is not a completely safe field mark for Magnificent.

Distribution

United States; western Mexico; Central America; the Caribbean; northern South America to Brazil in the east and to Ecuador and Galapagos in the west; and on Cape Verde Islands.

Taxonomy

Subspecies

Two subspecies are recognized[1].

Habitat

Pelagic species; at sea, and commonly along coastlines. Is not bothered by human settlement, and may benefit from human activities such as fishing and fish cleaning.

Behaviour

Diet

Diet includes fish, especially flying fish, which are taken in flight. Will attack other seabirds to steal their catches or try to force them to disgorge their meals. Will also snatch offal, such as fish entrails discarded by fishermen, from the surface of the sea.

Breeding

The male attends the nest for about 100 days, while the female stays with the single offspring for approximately another year; most of that time, the young stay in the nest. The female is therefore only able to breed every other year, while males may breed every year or maybe even more often in different colonies.

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, J. A. Gerbracht, D. Lepage, B. L. Sullivan, and C. L. Wood. 2021. The eBird/Clements checklist of Birds of the World: v2021. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/
  2. Audubon Guides
  3. BBC Nature

Recommended Citation

External Links

GSearch checked for 2020 platform.1

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