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The plumage of the Inca tern is the most atypical of the group.. Terns range in size from the least tern, at 23 cm (9.1 in) in length and weighing 30–45 g (1.1–1.6 oz), [1] [2] to the Caspian tern at 48–56 cm (19–22 in), 500–700 g (18–25 oz).
Common tern Conservation status Least Concern (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Aves Order: Charadriiformes Family: Laridae Genus: Sterna Species: S. hirundo Binomial name Sterna hirundo Linnaeus, 1758 Breeding Resident Non-breeding Passage Vagrant (seasonality uncertain) Synonyms Sterna fluviatilis (Naumann, 1839) Twisted head The ...
The South American tern (Sterna hirundinacea) is a species of tern found in coastal regions of southern South America, including the Falkland Islands, ranging north to Peru (Pacific coast) and Brazil (Atlantic coast).
Juvenile lesser crested terns resemble same-age Sandwich terns, but with a yellow-orange bill, and paler overall, with only faint dark crescents on the mantle feathers. There are two other orange-billed terns within the range of this species, royal tern and Greater crested tern. Both are much larger and stouter-billed; royal also has a white ...
Sterna is a genus of terns in the bird family Laridae. The genus used to encompass most "white" terns indiscriminately, but mtDNA sequence comparisons have recently determined that this arrangement is paraphyletic. It is now restricted to the typical medium-sized white terns occurring near-globally in coastal regions. [1]
The Terns are birds of the subfamily Sterninae in the family Laridae, the suborder Lari and order Charadriiformes. Subcategories This category has the following 8 subcategories, out of 8 total.
Forster's tern is a member of the gull and tern family Laridae; it has also been treated like other terns in their own family Sternidae by some authors. Forster's tern was named by Thomas Nuttall in honor of Johann Reinhold Forster, the German naturalist who first suggested it differed from the common tern. [5]
Terns have red oil droplets in the cone cells of the retinas of their eyes. This improves contrast and sharpens distance vision, especially in hazy conditions. [36] Birds that have to see through an air/water interface, such as terns and gulls, have more strongly coloured carotenoid pigments in the cone oil drops than other avian species. [37]