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Only this species and, more infrequently, other fairly large owls from the Strix genus are known to " snow-plunge " for prey, a habit that is thought to require superb hearing not possessed by all types of owls.
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Only and species
Only one species protected by CITES, the Spix's Macaw, has possibly become extinct in the wild as a result of trade since the Convention entered into force ( but see case studies in Hutton and Dickinson and Stiles for further discussion of the role CITES has played in the fate of particular species ).
Only a few species are arboreal-the North American gray fox, the closely related Channel Island fox, and the raccoon dog habitually climb trees.
Only gems that are medium to dark in tone are considered emerald ; light-toned gems are known instead by the species name green beryl.
Only meat from particular species is permissible.
Only an extinct species of grass-eating baboon ate more.
Only females feed on blood, and different species have evolved to take a blood meal on preferred types ofvertebrate hosts.
Only a few species, such as B. rosserae and B. elderiana ( Swordfish Banksia ), occur in arid areas.
Only 168 species ( less than 2 % of all polychaetes ) are known from freshwaters.
Only sixteen extant species of priapulid worms are known.
Only a photograph of the first specimen of this species was made at a local market by Arnaz and Mark Erdmann before it was bought by a shopper.
Only the four Panthera cat species have the anatomical structure that enables them to roar.
Only 48 bird species regularly nest along the river, while others use the river as a migration corridor or as overwintering habitat.
Only the montane species tend to make long distance flights.
Only some species of birds ( aves augurales ) could yield valid signs whose meaning would vary according to the species.
Only three species of placental mammal were not deliberately introduced to Australia, the House Mouse, Black Rat and the Brown Rat.
Only 15 species occur outside Australia, and only 9 do not occur in Australia.
******** Genus Notoryctes Only genus of marsupial moles with existant species
Only one species is thought to have become extinct since 1600, the Guadalupe Storm Petrel of Mexico, although a number of species had died out before this.
Only two of these species have been truly domesticated, one ( Apis mellifera ) at least since the time of the building of the Egyptian pyramids, and only that species has been moved extensively beyond its native range.
Only one other species in the Strongyloides genus, S. felis, has the trait of autoinfection.
Only about 2 % of known marine species inhabit the pelagic environment.
Only and more
Only, they carefully substituted old country folk dances for the Virginia Reels and square dances that were so popular among more worldly trains in the great westward migration.
Only one rule prevailed in my conversations with these men: The more highly placed they are -- that is, the more they know -- the more concerned they have become.
Only recently new `` holes '' were discovered in our safety measures, and a search is now on for more.
Only a very few of the more advanced ones, such as India and Pakistan, have developed systematic techniques of programing.
Only four towns indicated that they made any more than a normal effort to list property of this kind.
Only a few more than 10,000 boats had been registered with the Division of Harbors and Rivers at the end of the 1960 boating season, but many had been taken out of the water early when the threat of a hurricane brought the season to an early close.
Only a dozen or so schools send as many as six students, and there are seldom more than fifteen men in any single delegation.
Only those actually with Payne when he was shot, or who had left the party within not more than five minutes ( make five arbitrary ) positively had none.
Only with the more sensual, intense and baroque expressions of Marenzio, Monteverdi and Gesualdo does the singing seem a little superficial.
Only the Asteraceae have composite flower heads ; the other families do not, but share other characteristics such as storage of inulin that define the eleven families as more closely related to each other than to other plant families or orders such as the Rosids.
Only the oldest of the Catholic Ambrosians, the Fratres S. Ambrosii ad Nemus, had anything more than a very local significance.
Only class diagram and use-case diagrams are more or less fully implemented.
Only scientific investigation can show which is more likely to be correct.
Only a small part of the population has more than an elemental knowledge of French, the official language.
Only in the 18th century did a steady economic and demographic growth begin, an effect of the reforms by Spain's Bourbon dynasty and a more stable situation along the frontier.
Only if the leading coalition ticket outpolls the second-place coalition by a margin of more than 2-to-1 does the winning coalition gain both seats.
Only one molecule is involved in a unimolecular reaction ; it is transformed by an isomerization or a dissociation in one or more other molecules.
Only one person was injured aside from the bombers, but the Consulate was closed for more than a month.
Only a few fans could afford more professional printers, or the time it took them to print, until photocopying became cheap and ubiquitous in the 1970s.
Only after the ascendancy of Mikhail Gorbachev to Soviet leadership in 1985 did mass media in Finland gradually begin to criticize the Soviet Union more.
Only two weeks before Kennedy had spoken in more conciliatory tones, speaking of " improving relations with the Soviet Union ": in response to Kennedy's Berlin speech, Nikita Khrushchev, days later, remarked that " one would think that the speeches were made by two different Presidents.
Only in the mid-20th century did the Republic's population start to grow once more, but emigration was still common until the 1990s.
As of 2010 US Military spending is about 43 % of the world total .. Only a handful of countries spent a larger portion of GDP on military in 2010 and of these only Israel, Saudi Arabia, and the United Arab Emirates spent more than US $ 10 billion.
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