Those are some good suggestions, thank you very much! That is an old picture from when I got the first one 2 weeks ago. It's more than double that size now and turning more white.
So my ducklings are about 3 weeks old (Not sure what breed as they were a gift) and I've run out of starter food for them, and can't afford to get some growth pellets quite yet. Would it be bad or unhealthy for them to eat Canary/Finch feed until I can? So maybe about a week?