Which egg should I be 'eggspecting' for the future?

[Kattastrophe]

Khaleesi, my 6 month old indian runner started laying last week! I just started her on a chicken laying pellet feed this morning, because there's no duck pellets sold near me. The picture shows her most recent egg, from this morning, her first egg ( both hollowed out of course, ) beside a loonie. While the first is smooth, smaller, and greyish; this morning her egg was like this! Course, white and BIG! Should I be expecting more of the large, or smaller ones? Thanks!

 

[Amiga]

My runners started out with some very small, some a little small, and the occasional huge egg. It all sorted itself out to be more or less jumbo chicken egg size. Sometimes there is a grainy surface. My ducks have different calcium needs so it is a bit of a juggling act to give everyone all she needs without overdoing it.

Congratulations!

And Welcome to Duckdom!

 

[Kattastrophe]

Thank you!