Your profile photo of your cockatiels is lovely but I would hesitate before saying they're female. which is my first guess - although the larger one to the right may be a male.
Guess you'll have to post a lot of photos into this thread
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I was recently reading about molting & if you want really nice feathers & an easier time of it for your tiels - reduce the seed & add more vitamin A rich foods, like carrot, yams, tomatoes & sweet corn. The article said chop it fairly fine so they'll eat it easily & quickly - vitamin loss & spoiling are less.
& Vitamin suppliments will help
& Willow buds [spring ones] offer minerals & natural aspirin.
& Aloe in their drinking water & in their spray bath is a good idea -
Link on aloe:
http://www.landofvos.com/articles/wingtips/aloe.html
Link on feather health:
http://www.exoticpetvet.net/avian/feathers.html
If you enrich their diet you will only see feathers on the cage floor & your birds won't look rough at all - so they say & actually Alice & Mo have never looked too scruffy, but they do look better on their improved diet.
Don't forget the extra photos!
