One side of ducklings chest bigger than the other

[RJKnott]

So my 2 little ducklings, kinda noticed this but as they are getting bigger it’s becoming more noticeable, looks like one side of their chest is noticeably larger than the other. Something to be concerned about?
Trying to get a good picture of these little weirdos is tough

 

[casportpony]

Their crop is located on their right side and can get very large after they eat. Nothing to worry about.

 

[RJKnott]

Thanks. Only raised a few ducklings in the past. Normally take in adult rescues so just wanted to make sure it was t anything to worry about

 

[ruthhope]

Definitely the crop!!! Thanks for taking in rescues!!! Mine are rescues too