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==Subspesies==
Secara umumnya, empat [[subspesies]] telah diakui. Tiada sempadan darat yang jelas boleh dilukis untuk membezakan subspesies ini.<ref name=Madge/>
Four [[subspecies]] are generally accepted, though the variation within this species is rather subtle and essentially [[cline (population genetics)|clinal]]. No firm boundaries can be drawn between the inland subspecies. The ranges of the coastal races are better delimited.<ref name=Madge/>
{| class="wikitable"
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! ImageImej !! SubspeciesSubspesies!! CommonNama Namebiasa !! DescriptionPerincian !!Distribution Taburan
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|[[File:Bluejay (Cyanocitta cristata) (1547) - Relic38.jpg|120px]] ||''Cyanocitta cristata bromia'' ||NorthernJay blueBiru jayUtara || TheSubspesies largest subspeciesterbesar, withdengan fairlywarna dullbulu plumage.agak pucat Blue(lebih iskepada ratherbiru palepucat). ||CanadaKanada anddan northernutara UnitedAmerika StatesSyarikat.
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|[[File:Blue Jay Ash RWD5.jpg|120px]] || ''Cyanocitta cristata cristata''||CoastalJay blueBiru jayPantai || Mid-sizedSaiz andsederhana vividdan bluebiru terang. ||CoastalPantai USAA.S frombermula [[Northdi Carolina]] toUtara hingga [[Texas]], exceptkecuali southernselatan [[Florida]]
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|[[File:Cyanocitta cristata FWS.jpg|120px]] || ''Cyanocitta cristata cyanotephra''||InteriorJay blueBiru jayDalam || Mid-sizedSaiz sederhana, quitebiru darktua bluedi onbahagian mantlejubah contrastingberlawanan cleanlydengan withwarna veryputih whitepada undersidebahagian bawah. ||Inland USAPedalaman A.S, intergradingintergred withdengan ''C. c. bromia'' tohingga theke northutara.
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|[[File:Geai bleu.jpg|120px]] || ''Cyanocitta cristata semplei''|| FloridaJay blueBiru Florida jay||TheSubspesies smallest subspeciesterkecil, muchsama likeseperti ''C. c. bromia'' indari segi colorwarna. ||SouthernSelatan Florida.
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<gallery>
File:Blue Jay-27527.jpg|''Cyanocitta cristata cristata'' indi [[JohnstonKaunti CountyJohnston, North Carolina Utara]]
File:Young blue jay.jpg|''C. c. bromia'', NorthernJay blueBiru jayUtara, juvenile,anak muda indi [[Ontario]], CanadaKanada
File:Blue jay.jpg|''C. c. bromia'', NorthernJay blueBiru jayUtara indi Ontario, CanadaKanada
File:Blue Jay, Melbourne FLorida.jpg|Blue Jay Biru, Melbourne Florida
</gallery>
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