Health problem or heat/moulting?

[Youngspud]

Hi all, two of my male IRN's heads have weird looking little white points on them more excessive than a normal moult, to me they look unhealthy and like they are losing too much from their head compared to a normal moult, I feed all my IRN's on the same diet so I don't understand why it is only these two, any help would be greatly appreciated.

[Youngspud]

Heres the link, i havnt uploaded photos before so unsure if it will actually work.
http://www.flickr.com/photos/92711778@N ... hotostream
http://www.flickr.com/photos/92711778@N ... hotostream

[Youngspud]

Sweet I was just checking because they are the only two that are like that.