budgiebreeder.synthasite.com
Has some developmental time frames but Phoenix not being parent fed is smaller & behind schedule in some areas so might take longer for some of these things like feathers etc.
Seems the eyes can open during week 2 anywhere from 6 to 10 days so that would be good if they did open soon as it would be on time but I imagine it could take longer for Phoenix.
Look at the egg candling pic in the article. The egg does look darker than yours & today would be day least 22 or 23 so it probably did die sometime after 10 days of development.
Head up in 7 days is on schedule!
Yeah for Phoenix! Glad they are gaining weight.