Akara ubi

Akara ubi bụ njirimara (dịka ọmụmaatụ na plumage) bara uru maka njirimara ụdị, na-abụkarị nnụnụ. A na-ejikarị ha na ntuziaka ubi ma ọ bụ igodo njirimara. N'okwu sara mbara karị, enwere ike ịkpọ akara ubi dịka agwa (dịka "agwa dị iche" ma ọ bụ "agwa nchọpụta"). Maka nnụnụ nke a nwere ike ịgụnye plumage, àgwà ụgbọ elu, oke, olu, omume, wdg, ya bụ, njirimara niile na-enyere aka njirimara. N'adịghị ka akara n'aka, nke a na-amata mgbe ejidere ihe nlere anya n'aka, akara ubi bụ karịsịa akara ndị na-anọgide na-aba uru n'ọnọdụ na-erughị ezigbo ọnọdụ, dịka ọmụmaatụ mgbe isiokwu ahụ dị anya, ọ bụ naanị nke a na-ahụ anya ma ọ bụ na-ejighị ya ọkụ. hụ na agba ya.

 Edemsibe 

 http://www.allaboutbirds.org/NetCommunity/Page.aspx?pid=1053
 http://www.backyardnature.net/birdmark.htm