No. As long as they are within the size range stated in the standard, smaller is in fact, not better. There are many more factors at play. Not to mention that breeding extremely small birds negatively impacts their health
The chest on your boy could be bigger, the head and neck could have a better position, with the comb almost touching the tail feathers. IMO wing position is good. I like him. Could we get some better pics of the females?
@allosaurusrock would you agree with my assessment?
People are people, and will respond according to their moral compass (among other things). Your question has been answered, and you have also been given some responses from very trusted members on here pointing out the ethical issues in your plan. At the end of the day it's your ducks...
Ah, that's understandable. This study would require quite warm temperatures to be done correctly, so you're right. At least you won't be having unbearable heat all summer!
I'd love to see a short (or longer) study on comb and wattle surface area in relation to heat hardiness. My own experience tells me those two things are definitely connected, but some have disagreed, so it'd be nice to have a more "organised" study