Candling Robin Egg

[wildlifebygabri]

Hello!

I recently found a robin egg, I candled it earlier in the process of incubation and saw movement and blood veins. Now around 9 days later all I see is a huge black bob in there, no movement. There are still blood veins but I cant seem to see any movement. Is that just the chick growing more?

 

[Poultry parent]

That just means that the embryo has developed enough that it's taking up more of the egg, so it's just harder to see any detail