
aam shelduck

samanya shielduck (tadorna tadorna) shielduck genus, "tadorna" kii ack jalpakshi prajaati haye. yeh palearctic key euro-cyberian kshetra mein vyaapak aur aam haye, mukhya roop seey samshitoshna aur sardiyon mein uposhnakatibandhiya kshetron mein prajanan kartaa haye; sardiyon mein, yeh magreb mein bhee paaya jaa sakata haye.
dorkovo (bulgaria) seey jeevaashm haddiyaan jinhen balcanus pleocanica key roop mein varnit kiya gayaa haye, vaastav mein iss prajaati seey sambandhit hoe sakati hain. adhik sambhavana haye kii way apane praarambhik pliocene yug key kaaran "tadorna" (yadi ack alag genus naheen haye) kii ack vilupt prajaati hain; vartamaan prajaati jeevaashm record seey lagbhag 2-3 million saal baad (dair seey pleocene/praarambhik plistocene) taka spasht roop seey satyaapit naheen haye.
vargeekaran.
samanya shelduck kaa naam aupchaarik roop seey swedish prakritivaadi carle linius dwara 1758 mein unake "system naichuri" key dasaven sanskaran mein dwipad naam "anas tadorna" key tahat rakhaa gayaa thaa. linayas ney kaafee hudd taka apane vivaran koo "sheldrake yaa baroj-duck" parr adharit kiya thaa jiska varnan aur chitran 1731 mein angreji prakritivaadi elezar albin dwara kiya gayaa thaa. vishisht visheshan iss prajaati key liye francisi shabd "tadorn" seey aataa haye, ack naam jiska upayog 1555 mein francisi prakritivaadi pier bellen dwara kiya gayaa thaa. yeh mool roop seey celtic jadon seey vyutpann hoe sakata haye jiska arth haye "pied waterfall", anivarya roop seey angreji "shelduck" key samaan haye. linius ney iss ilaake koo europe key roop mein nirdisht kiya lekin 1761 mein ise sweeden taka seemit curr diyaa. aam shelduck koo abb german prani vigyaani friedrich boee dwara 1822 mein pesh kiye gaye genus "tadorna" mein rakhaa gayaa haye. prajaati ack prakaar kii haih koee upa-prajaati maanyata praapt naheen haye.
varnan.
aam shielduck aakar aur aakar mein ack chhote chhote gardan vaale huns jaisa dikhta haye. yeh ack hadataali pakshi haye, jiska laal-gulabi rung kaa bill, gulabi pair, badam key dhabbon aur kaale pett key saath ack safed shareer aur ack gahara haraa sir aur gardan haye. pankhon key aavaran safed hotey hain, praathamik anusmaarak kaale hotey hain, aur dwiteeyak harey (kewal udaan mein dikhaai dete hain) aur badam. undervings lagbhag poori tarah seey safed hain. ling samaan hotey hain, lekin maadaa chhote hotey hain, chehare key kuchh safed nishan hotey hain, jabaki purush prajanan key mausam mein vishesh roop seey kurkura rung kaa hotaa haye, uska bill chamkila laal hotaa haye aur maathe parr ack pramukh ghundi hoti haye.
batakh safed hotey hain, jinamen kaali topi, peeth aur pankh aur peeth key dhabbe hotey hain. kishore bhee isi tarah key rung key hotey hain, oopar bhoore rung key aur neeche jyaadaatar safed hotey hain, lekin pahale seey hii vayask key pankh kaa pattern hotaa haye.
coll ack jordar horn haye.
vitaran aur nivaas sthaan.
yeh ack pakshi haye joe samshitoshna eurobaria mein prajanan kartaa haye. adhikansh aabaadi sardiyon mein uposhnakatibandhiya kshetron mein pravaas karati haye, lekin yeh prajaati kaafee hudd taka paschimi europe mein rahati haye, isake alawa uttar german tata parr waden samudra jaise pasandida moulting ground mein andolanon key alawa.
grate britten aur ireland (jahan ise kewal shelduck key roop mein jaanaa jaataa haye) kii tatrekha key aspas aam shelduck haye, jahan yeh aksar namak key daldal aur muhaane mein aataa haye. yeh aksar khargosh key gaddhon mein ghonsala banaata haye. iss pakshi koo uttari america mein durlabh roop seey dekhaa jaataa haye aur yuu. mein kabhi-kabhi aaney vaale agantukon key roop mein bataaya jaataa haye.aiss. aur kanada.
vyavhaar.
moulting jhund bahut badey hoe sakate hain (samudra mein 100,000), kyonki adhikansh jode apane aanshik roop seey ugaaye gaye yuva koo kewal ack yaa dou vayaskon key saath ack cratch mein chhod dete hain.
yeh prajaati mukhya roop seey khule desh mein jheelon aur nadiyon seey judee hui haye, khargosh key gaddhon, pedon key chhed, ghaas key dher yaa isi tarah key prajanan mein. sardiyon mein yeh upayukt muhaane aur jwaariya mitty key maidanon parr bhee aam haye.
yeh pakshi una prajaatiyon mein seey ack haye jiss parr "african-eurasian pravaasi jall pakshiyon key sanrakshan parr samjhauta" (aeye. ee. vee. aeye.) lagu hotaa haye.
shikariyon seey bachane key liye yuva paani key neeche gotaa lagaayenge aur vayask ack dhokhebaaj key roop mein kaary karane key liye unase door uda jaayenge.

