Did we end up with a second Rooster?

[Starganderfish]

We inherited a small flock of four elderly hens and one handsome rooster (Rusty) when we bought our house. We added 9 pullets (3 each of ISA Brown, Black Australorps and Rhode Island Whites) Things have gone well, they're growing and laying quite prolifically now. But about 2 weeks ago we noticed our Roosters tail fathers were gone, his rump looked quite raw and then he started losing his feathered crest. We're in Australia so it's mid-summer and regular moulting seems unlikely.

Today we noticed that one of the young Whites seems a bit different to the others, with a much more pronounced comb, walking with a puffed-out chest and elevated tail feathers, and seems more lean around the haunches and legs.
We're wondering if this is actually a juvenile Rooster? That might explain why our original Rooster (Rusty) is so dishevelled and distressed.
It's hard to tell just from pics but what do we think?


In contrast, these are the other Whites, of a similar age:

We have a very large run with two separate coops and two separate runs, so for the time being, I've seperated Rusty and the new kid (tentatively named Foghorn-Leghorn) and split the flock between their two runs (6 in each). Each group has a sheltered run, a comfy coop with roosts, laying boxes, and fresh water and feed. If necessary, we can run them as two separate flocks, but for now I want to try and see if Rusty improves and if Foghorn starts becoming more "roostery".
But I'm still new to all this and would appreciate some more experienced opinions.

 

[MountainWoman73]

Foghorn looks like a girl to me.

If you noticed Rusty's tail feathers missing all of a sudden, I would say he lost them in a predator attack. I had one get away from a bobcat and lose all his rump feathers in a similar manner. It's possible the ladies are pecking at them because he looks different, slowing their regrowth. If the feather loss started gradually, I would say one or more of your hens is picking them out when they roost.

 

[The Moonshiner]

I also think your suspect is a female

 

[WingItRanch]

I think you've got a feather plucking issue on your hand. The crested birds often get picked on.

 

[JedJackson]

The white one looks female to me as well. I agree Rusty's problem is the result of either a predator attack or feather picking. The latter can sometimes be alleviated by using feed with higher protein content.