"श्येनः" इत्यस्य संस्करणे भेदः

 

==प्रकृतिः==

श्येनः आकारेण महान् भवति। सः मांसं खादति। मांसखादने तस्य चञ्चूः, पादनखाश्च अनुकूलाः भवन्ति। अन्यपक्षिणां चञ्च्वाः अपेक्षया श्येनस्य चञ्चूः भारयुता बलिष्ठा च भवति। प्रायेण श्येनः कृष्णवर्णीयः भवति। श्येनः आकाशे उपरिभागे एव डयते। तस्य नेत्रं तीक्ष्णं भवति। मारिषस्य श्येनस्य नेत्रस्य प्रमाणं मानवनेत्रस्य प्रमाणात् द्विगुणितं वर्तते। श्येनस्य दर्शनशक्तिः मानवस्यापेक्षया चतुर्गुणिता भवति।.<ref>{{cite journal|last=Shlaer|first=Robert|year=1972|title=An Eagle's Eye: Quality of the Retinal Image|journal=Science|volume=176|issue=4037|pages=920–922|doi=10.1126/science.176.4037.920|url=http://www.csee.wvu.edu/~xinl/library/papers/biology/eagle_eyes.pdf|accessdate=16 April 2012|pmid=5033635|deadurl=yes|archiveurl=https://web.archive.org/web/20121130130226/http://www.csee.wvu.edu/~xinl/library/papers/biology/eagle_eyes.pdf|archivedate=30 November 2012|df=dmy-all}}</ref> पुंश्येनस्य अपेक्षया स्त्रीश्येन आकारेण महान् भवति।<ref>{{cite book|author=Leclerc, Georges|author2=Louis, Comte de Buffon|title=The Natural History of Birds: From the French of the Count de Buffon; Illustrated with Engravings, and a Preface, Notes, and Additions, by the Translator|url=https://books.google.com/books?id=sFmrk6_RBg8C&pg=PA60|year=2010|publisher=Cambridge University Press|isbn=978-1-108-02298-9|pages=60–|deadurl=no|archiveurl=https://web.archive.org/web/20160429190712/https://books.google.com/books?id=sFmrk6_RBg8C&pg=PA60|archivedate=29 April 2016|df=dmy-all}}</ref><ref name="Grambo2003">{{cite book|author=Grambo, Rebecca L.|title=Eagles|url=https://books.google.com/books?id=O5J8JK07QykC|year=2003|publisher=Voyageur Press|isbn=978-0-89658-363-4|deadurl=no|archiveurl=https://web.archive.org/web/20160430184052/https://books.google.com/books?id=O5J8JK07QykC|archivedate=30 April 2016|df=dmy-all}}</ref>

महावृक्षेषु बहु उपरिभागे श्येनाः नीडं रचयन्ति। प्रायेण श्येनः अण्डद्वयं सृजति। परन्तु प्रथमतया जातः शिशुः अपरम् अण्डं नाशयति। एवं प्रथमशिशुः प्रायेण स्त्री एव भवति, यश्च आकारेण महान् भवति।<ref name= gambo>{{cite book | last = Grambo | first = Rebecca L | title = Eagles | year = 2003 | publisher = Voyageur Press | isbn =978-0-89658-363-4 |page = 32 }}</ref><ref name= stinson>{{cite journal | last= Stinson | first= Christopher H| year=1979 | title= On the Selective Advantage of Fratricide in Raptors | journal= Evolution | volume= 33 | issue = 4| pages= 1219–1225 | doi =10.2307/2407480 | jstor= 2407480}}</ref>