Related taxa: * Falco columbarius ----- Falco columbarius [columbarius, suckleyi or richardsonii] ---------- Falco columbarius [columbarius or suckleyi] --------------- Falco columbarius columbarius --------------- Falco columbarius suckleyi ---------- Falco columbarius richardsonii --------------- Falco columbarius richardsonii (richardsonii) --------------- [ Falco columbarius richardsonii (bendirei) ] ----- Falco columbarius [aesalon] ---------- Falco columbarius aesalon --------------- Falco columbarius aesalon (aesalon) --------------- [ Falco columbarius aesalon (regulus) ] ---------- Falco columbarius subaesalon ---------- Falco columbarius insignis ---------- Falco columbarius pacificus ---------- Falco columbarius lymani ----- Falco columbarius pallidus ---------- Falco columbarius pallidus (pallidus) ---------- [ Falco columbarius pallidus (christianiludovici) ]

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