Katalabeno ton Carduelis, kai ton Andreas, kai olous tous alous.
OMOS gia na ksekinisoume afti tin zitisi, prepei na katalabenoume proto apo ola pos ginete na blepoume emeis xromatista ta ftera tou pouliou.
Iparxoune proto to melanin kai to pheomelanin. To melanin einai i basi gia to mayro, to pheomelanin einai u basi gia to kafe xroma. Afta analoga poso dynata i adynata einai kanoune to xroma tou pouliou. Theoretika iparxei tora tin periptosei, otan to melanin kai to pheomelanin einai se katalila posotita na ginete to pouli mayro, kafe kai mexri kokino bori na ginete i karderina mas. Analoga otan lipoune to melanin kai to pheomelanin ginounte ta poulia isabel, pheo, pastel i satinet, lutino kai an exoume olokliro elipsis ta poulia ginounte aspra ( Albinismo ).
Thefteron ta xromata pou blepoume emeis sta exotika poulia kai sta papagalakia to ble to mprasino kai to mauve ginete apo tin katastasi tis fteras, kai oxi apo to melanin kai to pheomelanin. Se afta ta poulia me ta PARAKSENA xromata exei alaksi i katastasi ton fteron. Emeis blepoume ta xromata analoga pos kobete to fos. Afta ta exotika poulia meza sta ftera exoune alo struktura tis fteras, enooi exoune san fouskes apo aera pou kanoune na kobete diaforetika to fos kai blepoume ksafnika ble, mprasina kai mauve xromata. Afti i alagi den ginete apotoma. Os blepete sta kanarinia xriastikane kamia 80 xronia na exoune afto pou leme BLE-FAKTOR, omos gia aftous pou den kseroune, to pouli fenete akoma grey kai oxi ble. Kai mipos tora pou iparxoune ble-faktor me epilogi siga siga tha ginoune se 5-6 xronia ble kanarinia.
An to katalabenoume afto kseroume EINAI ADINATO NA IPARXEI MIA KARDERINA POU EXI GINI TO KITRINO BLE KSAFNIKA.