dou-avarodhit crossbill

dou-avarodhit crossbill yaa safed-pankhon vaalaa crossbill (loxia leukoptera) finch parivaar key fringilidae mein ack chhota pasreen pakshi haye.
vyutpatti.
iska vaigyaanik naam pracheen yunani seey liya gayaa haye. "loxia" "seey haye," "crossvise", "aur iska arth haye" "safed-pankh" "seey," "safed" "aur" "pankh" ".
vargeekaran.
isaki dou upa-prajaatiyan hain, uttar america mein safed-pankhon vaalaa crossbill ("loxia leukoptera leukoptera"), aur poorvottar europe mein dou-avarodhit crossbill ("loxia leukoptera bifasikata") aur polyerctic.
vitaran aur nivaas sthaan.
yeh pakshi alaska, kanada, sabse uttari sanyukt raajya america key shankudhari jangalon mein aur uttar-purvi europe taka faile hue polyarctic mein prajanan kartaa haye. yeh shankudhari mein ghonsala banaata haye, 3-5 andey detaa haye.
yeh crossbill mukhya roop seey nivasi haye, lekin yadi iska khaadya srot whiffle hoe jaataa haye tou yeh aniyamit roop seey dakshin mein baadhit hoe jaayega. americi jaati eurobyrian upa-prajaati kii tulanaa mein adhik baar bhatakati prateet hoti haye. yeh prajaati prajanan key mausam key baahar jhund banaayegi, aksar anya crossbill key saath mishrit hogi. yeh paschimi europe kaa ack durlabh agantuk haye, joe aamtaur parr laal crossbill key vyavadhaan key saath aataa haye.
varnan.
maapah
crossbill koo unake tip parr mandibles crossing dwara chihnit kiya jaataa haye, joe samooh koo iska angreji naam detaa haye. way shankudhari shanku parr visheshagya feeder hain, aur asamanya bill aakar shanku seey beej nikaalane mein sahaayata key liye ack anukoolan haye. dou-avarodhit crossbill mein larch ("larics") key liye ack majboot vareeyata haye, eurosiberia mein cyberian larch ("larics sibirica") aur dahurian larch ("ell. melini), aur uttari america mein tamrak larch (l. lauricina "). yeh rovan (sorbus) jamun bhee legaa, aur uttari america mein, purvi hemlock (tsuga canadensis) aur safed spruce (pisa glauca) shanku bhee lenge.
vayask narr laal yaa gulabi rung key hotey hain, aur maadaaen hurry yaa pealy hoti hain, lekin isamen bahut bhinnata hoti haye. dou-avarodhit koo anya crossbill kii tulanaa mein pahachaanana aasaan haye, vishesh roop seey uttari america mein, jahaan kewal laal crossbill aur yeh prajaati paaee jaati haye, lekin abhee bhee kuchh dekhbhal kii aavashyakta haye.
apani paliarctic seema key bheetar, yeh prajaati tote key crossbill aur scotish crossbill kii tulanaa mein chhoti aur chhoti hoti haye, isaliye vahaan aur uttari america donon mein prajaatiyon key beach mukhya bhram laal yaa aam crossbill key saath hotaa haye.
laal crossbill seey mukhya pankh kaa antar safed pankh vaale hain joe iss prajaati koo isake angreji aur vaigyaanik naam dete hain. tertial key liye safed yuktiyaan bhee hain. vayask purush bhee anya purush crossbill kii tulanaa mein kuchh adhik chamkila (gulabi) laal hotaa haye. kuchh laal crossbill kabhi-kabhi kamjor safed pankh dikhaate hain, isaliye iss prajaati kii sahee pehchaan key saath dekhbhal kii aavashyakta hoti haye. chip" coll laal crossbill kii tulanaa mein kamjor aur adhik haye.
carribean mein hyspaniola parr ack aur crossbill prajaati koo pahale ack upa-prajaati ("loxia leukoptera megaplaga") key roop mein maanaa jaataa thaa, lekin abb ise ack alag prajaati key roop mein maanaa jaataa haih hyspaniolan crossbill ("loxia megaplaga"). yeh hyspaniolan pine pedh ("pinus ausidentalis") seey judaa huaa haye, aur gahare pankh mein dou-avarodhit crossbill seey alag haye, ack stauter bill, aur anya crossbill prajaatiyon kii tulanaa mein isake bhaugolik algaav.

