Fragata magnífica: Diferenzas entre revisións

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Esta especie é a maior de todas as especies de fragatas. Mide de 89 a 114&nbsp;cm de lonxitude, ten unha envergadura alar de 2,17 a 2,44&nbsp;m e pesa de 1,1 a 1,59&nbsp;kg.<ref name=hbwonline>{{cite book| last1=Orta | first1=J | last2=Garcia | first2=EFJ | last3=Kirwan | first3=GM | last4=Boesman | first4=P | chapter=Magnificent Frigatebird (''Fregata magnificens'') | editor1-last=del Hoyo | editor1-first=J | editor2-last=Elliott | editor2-first=A | editor3-last=Sargatal | editor3-first=J | editor4-last=Christie | editor4-first=DA | editor5-last=de Juana | editor5-first=E | title=Handbook of the Birds of the World Alive | publisher=Lynx Edicions | chapterurl= http://www.hbw.com/node/52669 | accessdate=30 November 2014 }}{{subscription required}}</ref> Males are all-black with a scarlet [[throat pouch]] that is inflated like a balloon in the breeding season. Although the feathers are black, the scapular feathers produce a purple iridescence when they reflect sunlight, in contrast to the male [[Great frigatebird|great frigatebird's]] green sheen. Females are black, but have a white breast and lower neck sides, a brown band on the wings, and a blue eye-ring that is diagnostic of the female of the species. Immature birds have a white head and underparts.▼

It spends days and nights on the wing, with an average ground speed of {{convert|10|kph|abbr=on}}, covering up to {{convert|223|km |abbr=on}} before landing. They alternately climb in [[thermal]]s, to altitudes occasionally as high as {{convert|2500|m|abbr=on}}, and descend to near the sea surface. The only other bird known to spend days and nights on the wing is the [[common swift]].<ref name="chastel">{{cite journal | last1 = Weimerskirch | first1 = Henri | last2= Chastel | first2=Olivier | last3=Barbraud | first3=Christophe | last4=Tostain | first4=Olivier | year=2003 | title = Frigatebirds ride high on thermals | journal = Nature | volume = 421 | pages = 333–334 | url = http://www.cebc.cnrs.fr/publipdf/2003/WNat421.pdf | doi = 10.1038/421333a | pmid = 12540890 | issue = 6921}}</ref>▼