For every other egg, you candle from the fat end down at 7 days incubation or more.
By then you should be able to see veins and possibly a red dot in the middle which is the embryo with a little pulsing heartbeat.
I incubate eggs all the time, just not chukar eggs. ;)
@Kiki can you show him a...
I've not done chukar eggs myself, but I've been tempted. I'd like to see how this goes for you.
How many days for incubation? It may still be too early to see anything wait until day 7 or 10.