Nicely enough, with the question phrased in this manner--"using the letter 'x' " doesn't necessarily mean that the word needs to begin with the letter 'x'.I do not know what a Xenipirostris is--I have found reference to a Xenopirostris, which is a genus of birds. These are found in Madagascar. There are three species mentioned in Wikipedia.Van Dam's Vanga (Xenopirostris damii)Pollen's Vanga (Xenopirostris polleni)Lafresnaye's Vanga (Xenopirostris xenopirostris) 11 http://en.wikipedia.org/wiki/XenopirostrisSuggestion for describing Xenopirostris using the letter 'x':"The Van Dam's and Pollen's Vanga are both threatened, due to encroachment of their habitat which is declining in both extent and quality."[Notice the letter 'x' in the word e-x-t-e-n-t.]
X-Ray fishX-Ray tetraXanclomys - a small mammal from the Paleocene of North America.Xanthareel - yellow eelXantis - yakXantus - a birdXantusiidae (family of night lizards)Xantus murrelet - a small seabird found in the California Current system in the Pacific Ocean.Xeme - an artic fork-tailed gull.Xenarthra - mammal in South AmericaXenicidae (family of New Zealand wrens)Xenopeltidae (family of reptiles including sunbeam snake- Xenopeltis)Xenipirostris (genus of birds from Madagascar)Xenops - a rain forest bird from the AmericasXenopterygii (order of fishes including clingfishes)Xenopus - a frog; toadXenurine - a species of armadillo; a cabassou.Xenurus unicinctus - an armadillo native of the tropical parts of South America.Xerus - a type of ground squirrel from AfricaXiphias - a swordfish.Xiphias gladiusXiphosuran - a horseshoe crab.Xoloitzcuintli - a dog
X-Ray fishX-Ray tetraXanclomys - a small mammal from the Paleocene of North America.Xanthareel - yellow eelXantis - yakXantus - a birdXantusiidae (family of night lizards)Xantus murrelet - a small seabird found in the California Current system in the Pacific Ocean.Xeme - an artic fork-tailed gull.Xenarthra - mammal in South AmericaXenicidae (family of New Zealand wrens)Xenopeltidae (family of reptiles including sunbeam snake- Xenopeltis)Xenipirostris (genus of birds from Madagascar)Xenops - a rain forest bird from the AmericasXenopterygii (order of fishes including clingfishes)Xenopus - a frog; toadXenurine - a species of armadillo; a cabassou.Xenurus unicinctus - an armadillo native of the tropical parts of South America.Xerus - a type of ground squirrel from AfricaXiphias - a swordfish.Xiphias gladiusXiphosuran - a horseshoe crab.Xoloitzcuintli - a dogXoni - mystical creature.Xylophone Cat- A cat that is only by legend but some claim to have seen it.
X-Ray fishX-Ray tetraXanclomys - a small mammal from the Paleocene of North America.Xanthareel - yellow eelXantis - yakXantus - a birdXantusiidae (family of night lizards)Xantus murrelet - a small seabird found in the California Current system in the Pacific Ocean.Xeme - an artic fork-tailed gullXenarthra - mammal in South AmericaXenicidae (family of New Zealand wrens)Xenopeltidae (family of reptiles including sunbeam snake- Xenopeltis) Xenipirostris (genus of birds from Madagascar)Xenops - a rain forest bird from the AmericasXenopterygii (order of fishes including clingfishes)Xenopus - a frog; toadXenurine - a species of armadillo; a cabassou.Xenurus unicinctus - an armadillo native of the tropical parts of South America. Xerus - a type of ground squirrel from AfricaXiphias - a swordfish.Xiphias gladius Xiphosuran - a horseshoe crab.Xoloitzcuintli - a dogXoni - mystical creature.Xylophone Cat- A cat that is only by legend but some claim to have seen it.
Animals beginning with the letter X:X-Ray fishX-Ray tetraXanclomys - a small mammal from the Paleocene of North America.Xanthareel - yellow eelXantis - yakXantus - a birdXantusiidae (family of night lizards)Xantus murrelet - a small seabird found in the California Current system in the Pacific Ocean.Xeme - an artic fork-tailed gull.Xenarthra - mammal in South AmericaXenicidae (family of New Zealand wrens)Xenopeltidae (family of reptiles including sunbeam snake- Xenopeltis)Xenipirostris (genus of birds from Madagascar)Xenops - a rain forest bird from the AmericasXenopterygii (order of fishes including clingfishes)Xenopus - a frog; toadXenurine - a species of armadillo; a cabassou.Xenurus unicinctus - an armadillo native of the tropical parts of South America.Xerus - a type of ground squirrel from AfricaXiphias - a swordfish.Xiphias gladiusXiphosuran - a horseshoe crab.Xoloitzcuintli - a dogXoni - mystical creature.Xylophone Cat- A cat that is only by legend but some claim to have seen it.DinosaursXenoposeidonXenotarsosaurusXiaosaurusXinjiangovenatorXuanhanosaurusXuanhuaceratopsXuanhuasaurusXenops(a type of bird)X: Parailia pellucidaX-L Spring Tui Chub: Gila bicolor oregonensisX-Ray Fish: Pristella maxillarisX-Ray Tetra: Pristella maxillarisXami Hairstreak: Callophrys xami, Callophrys xami texamiXanthippe's Shrew: Crocidura xantippeXantic Sargo: Anisotremus davidsoniiXantus Leaf-Toed Gecko: Phyllodactylus xantiXantus Swimming Crab: Portunus xantusiiXantus' Murrelet: Synthliboramphus hypoleucusXantus's Hummingbird: Basilinna xantusiiXantus's Murrelet: Synthliboramphus hypoleucusXeniades Swallowtail: Mimoides xeniadesXenoclea Longwing: Heliconius melpomenexenocleaXenocrates Leafwing: Polygrapha xenocratesXerces Blue: Glaucopsyche lygdamus xerces, Glaucopsyche xercesXeric Ambersnail: Succinea indianaXestia Badicollis: Xestia badicollisXestia Elimata: Xestia elimataXestus Fangblenny: Petroscirtes xestusXestus Sabretooth Blenny: Petroscirtes xestusXingu Corydoras: Corydoras xinguensisXingu River Ray: Potamotrygon leopoldiXinjiang Ground-Jay: Podoces biddulphiXuthus Swallowtail: Papilio xuthus
Bird names that start with the letter x are: Xenops (rainforest bird from the Americas) Xantus's Hummingbird Xantus's Murrelet Xavier's Greenbul Xinijang Ground-Jay