Results 111 to 120 of about 728 (153)

Ratites and tinamous in the future

2002
Abstract In the last five hundred years more than half the recent species of large ratites have become extinct, including all the moas and elephant birds and two of the three emus. Two of the three kiwis are greatly reduced in number. Amongst the tinamous, several are now endangered.
S J J F Davies, Michael J Bamford, Danika Loomes   +2 more
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Thermoregulation in ratites: a review

Australian Journal of Experimental Agriculture, 2008
Laboratory and free-ranging studies on the emu, ostrich and kiwi show ratites to be competent homeotherms. While body temperature and basal metabolic rate are lower in ratites than other birds, all of the thermoregulatory adaptations present in other birds are well established in ratites. The thermoneutral zone has been established for the emu and kiwi,
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The Ruckus over Ratites

Science News, 1994
A t dusk in the east Texas town of Montgomery, the pale golden sky gives way to striations of pink and plum light. In the distance, on the Cartwright farm, cows converse in low baritones. From somewhere farther away on this 246-acre spread comes a surprising sound: a gentle, jazzy timbre, resonating like a bass. Music, yes, but not exactly strings.
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A DNA test to sex ratite birds

Molecular Ecology, 2002
AbstractDNA‐based sex tests now exist for many avian species. However, none of these tests are widely applicable to ratites. We present DNA sequence data for a locus that is W chromosome‐linked in the kiwi, ostrich, cassowary, rhea, and emu.
Huynen, L, Millar, CD, Lambert, DM
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The Welfare of Farmed Ratites

2011
Phil Glatz, Christine Lunam, Irek Malecki (editors)
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A review of ratite nutrition

Animal Feed Science and Technology, 1996
Abstract This paper reviews the literature available on ostrich, emu and rhea nutrition. Information on the unique characteristics of the gastrointestinal tract and general biological information about these flightless birds is presented. The following information is discussed: nutrient digestibility in ostriches and emus, nutrient requirements of ...
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Ratites and tinamous (Paleognathae)

2009
Abstract The Superorder Paleognathae consists of the Pightless ratites and the volant tinamous. It is the closest relative of the remaining birds in the Superorder Neognathae. Ratites are named for their raJ-like (ratis) sternum that lacks a keel, whereas the tinamous have a keeled sternum.
Allan J Baker, Sérgio L Pereiraa
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The Structure and Sensory Innervation of the Integument of Ratites

2011
This chapter reviews the microanatomy and innervation of the integument of the ostrich and the emu. We consider how these structures enable ratites to interact with their environment and how damage to the skin may compromise the welfare of the birds. The skins of the ostrich and the emu are structurally very similar.
Weir K. A., Lunam C. A.
openaire   +3 more sources

On the rarity of ratite hybridization

Emu - Austral Ornithology
Although an estimated 10–20% of bird species are known to hybridise, research on avian hybridisation is strongly biased towards certain groups, leaving others understudied. Hybridisation in ratites–a polyphyletic group of flightless birds including ostriches, rheas, cassowaries, emus, and kiwi–has received little attention, largely due to its apparent ...
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Ruffling ancient ratite feathers

Science, 2014
Evolution![Figure][1] An adult kiwi and an elephant bird egg. PHOTO: KYLE DAVIS AND PAUL SCOFIELD/CANTERBURY MUSEUM Biologists have often pointed to the breakup of the supercontinent Gondwana to explain how related species ended up on far-flung continents, but as new research shows, that explanation doesn't fly with ratite birds. Ratite birds are a
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