chickens skin they are mites.
Lice are easier to spot because they are larger and are brownish
yellow in colour. The act of dustbathing is the natural way that
chickens help alleviate pest issues. A lot of chicken keepers
dust a little DE (food grade Diatomaceous earth, NOT the pool
kind) in their coops, nest boxes, and dust bathing areas as a
prevention (it can also be dusted directly on the birds as a treatment
for lice etc if needed).
If you do see that some of
your chickens are being picked on (and sometimes sore / injured
areas can in themselves attract attacks) it seems that putting
some vicks around the area acts as a big deterrent (pine tar can
apparently work in the same way) - a little goes a long way. It
was first mentioned by a subscriber in the July issue as her way
of preventing some attacks when she had mixed together two flocks,
and since then a few other subscribers have said it has also worked
for them. If any blood is drawn it is advisable to separate until
healed as blood can have the whole flock attacking the injured,
and chickens can be quite cannibalistic.

Robert Smith :
Hi Gina, Thank you for your very interesting site. Please excuse
my naivety:- my beautiful little silkie is now clucky and happily
sitting on a couple of eggs. My question is that the rooster has
been absent now for 7 (seven) days. What is the likelihood of
these eggs being fertile after this time. Regards, Robert
My Reply : At any
one time there are usually several eggs in the process of formation.
After mating the eggs should be fertile for however long it takes
for however many eggs were inside her being formed at that time.
Often that can mean the next four or five eggs, but it really
depends on the individual hen and the fertility (or should that
be virility?) of the rooster. If those are the only two eggs she
has laid since the rooster was around then there is a good chance
they could be fertile. Good luck!