Fertile cockatiel egg?

[Patiocoturnix]

So my female layed an egg I removed it because it had a hole in it so I cracked it open and I’m pretty sure there is a bullseye wanted more eyes for more opinions

 

[Fluffy_Moth_With_Silkies]

So my female layed an egg I removed it because it had a hole in it so I cracked it open and I’m pretty sure there is a bullseye wanted more eyes for more opinions View attachment 3718954

Yep! That's a fertile egg. That white spot is indeed a bullseye. Pretty cool!