![]() This can cause confusion when swapping notes with international finch enthusiasts. Watch out - North American breeders often refer to SF Pastel Green cocks as Dilute, because it's a natural description for a bird with this appearance - and because the Australian recessive Dilute (see below) does not exist in North America. Pastel Green babies fledge light Olive green ( SF males) or White-yellow ( DF males and SF females).Īlthough the recessive Dilute mutation (see below) is phenotypically (visually) similar to a SF Pastel Green cock, it is genetically unrelated. Possibly an autosomal recessive PARblue (a partial blue), or it may be acquired (an unusual response to environmental conditions). This could be caused by inbreeding by breeders trying to produce more of these valuable birds, or by cabinet-breeding (a low-stimulation environment in which birds fail to learn basic skills), or it might be a facet of the mutation itself.īlue mutation Gouldians are not recommended for beginner finch keepers. Some also observe that Blue Gouldians may display cognitive deficits in the form of reduced adaptability and survival behaviour. Hence the very high price of this mutation - most die young, making them rare. ![]() The experience of most Australian breeders is that Blue-backed Gouldians are likely to die in outdoor aviaries and babies rarely make it beyond a few weeks, unless they are kept warm and their enclosure is regularly fogged with a sterilising agent or the birds are medicated. It is vigorously debated whether most or all Blue Gouldians have an immune system fault that means they can only be kept alive in unusually clean, climate-controlled environments. Some claim that split Blues (birds that carry one copy of the recessive Blue gene but do not display it) can sometimes be identified by those with good colour vision, usually women, by a subtle blue/dull wash through the green feathers.
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