What's wrong with my chickens?

Hi, I got 2 new chickens yesterday (I have never owned chickens before so know little) and I noticed today that they are not looking very well. There beaks are wet from runny nostrils and  one of them keeps sneezing or coughing which causes mucus bubbles from its nostrils. They are making a raspy noise while they breath and often cough. They've spent most of the day just sitting outside. They also seem to shake their head a lot and scratch or prune themselves. They have eaten a normal amount and have been drinking normally.  Please help me!!!

no they seemed ok yesterday however one of them seemed to be yawning or something that looked like that but I just assumed it was stress from being moved around. I'm using straw that was given to me by a friend that has chickens.

Hopefully you have got them quarantined from any other birds? This sounds like a respiratory problem and they will need anti biotics from the vet, they could also have gapeworm so will need to be wormed. It's not a good idea to put straw in with hens as it can harbour all sorts of unwelcome insects, also if they eat any of it it can impact in their crop. Check them over carefully for lice, especially around the vent area, (where the eggs come out). Let us know how you get on.

Just spoke to a friend and they said it could be fumes coming of the wood varnish that's giving them runny noses. This could be a reason as it has been hot and it is a brand new coop and it does smell quite strong... what so you think?

Agree with the toad, it sounds like an infection which will need antibiotics.
here's a link for info about mycoplasma  http://poultrykeeper.com/respiratory-problems/mycoplasma
Good luck