We currently have 20 birds that are all 13.5 weeks old. We chose to order 15 total birds (5 Isa Brown, 5 Barred Rock and 5 Rhode Island Reds) all pullets. However, they sent us an extra 5 birds and said they would also all be pullets. But...we think we may have at least one rooster in the hen house with another one in question. The main bird we are wondering about (Rhode Island Red) started to look different pretty quickly and has many of the physical and personality traits of a rooster. "He" is the one who is in charge of the coop, eats first, heads out in the run first in the morning and the other birds tend to stay out of "his" way. I took some pictures around 9 weeks and then again today so hopefully we can get a clearer idea if this friend is a he or a she. Our intention was never to keep roosters because we are only looking for eggs. Any help would be much appreciated.

This is a photo at 9 weeks old. These birds are the exact same age and breed.

This photo was from this morning and they are 13.5 weeks old.

13.5 weeks and the male in question...

13.5 weeks and the same breed as the "male" above but looks more like a female.
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We also have one more bird in question. Around 9 weeks we thought maybe she was looking more male but the research I was able to find said pullets can show some male traits. Now this morning out in the run, the feather coloring, comb and leg size and overall size seems different than the other birds of the same breed. Thoughts?

These friends are 13.5 weeks and the lighter colored one in the back is the one I have a question about.

Can pullets be that different in head comb size and coloring or do we have different genders here?
Thank you all so very much for any and all opinions you have to lend.
Have a great day!
This is a photo at 9 weeks old. These birds are the exact same age and breed.
This photo was from this morning and they are 13.5 weeks old.
13.5 weeks and the male in question...
13.5 weeks and the same breed as the "male" above but looks more like a female.
--------------------------------------------------------------
We also have one more bird in question. Around 9 weeks we thought maybe she was looking more male but the research I was able to find said pullets can show some male traits. Now this morning out in the run, the feather coloring, comb and leg size and overall size seems different than the other birds of the same breed. Thoughts?
These friends are 13.5 weeks and the lighter colored one in the back is the one I have a question about.
Can pullets be that different in head comb size and coloring or do we have different genders here?
Thank you all so very much for any and all opinions you have to lend.
Have a great day!