I have a small collection of Eastern Rosellas.
Two pairs have been breeding well; twice a year for last two years (2014 and 2015). But this year, all hatchinglings off both pairs died within 24 hrs after hatching. This has happened without exception for two consecutive broods of both pairs. The little ones just don’t make it beyond the first day! The parent birds are very healthy and with good parenting experience. All eggs are fertile and the process of egg pipping and hatching happens very smoothly and I do not handle the new borns.
All other conditions such as diet, water, cage location, nesting boxes have remained the same. The only abnormality I can notice is that the abdomen of these dead hatchlings is somewhat dark green in colour (no distension). Havn’t been able to get hold of an avian vet so far. Please advice. Thank you.