There has been a lot of talk about the azul factor lately and all kinds of opinions are expressed. I have determined the following experimentally. Azul birds have a slightly mauve body color compared to a classic bird (if you breed with recessive white birds of course, this is not noticeable). Azul birds have a slightly slower growth compared to classic birds (although this should not be exaggerated with well-fed pupae). The effect of the azul factor is already visible in the nest.
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