I have a 'spot-check' themometer that
brinsea also sells that is really reliable, and the two always agree, I also have a digital hygrometer inside to double check humidity too - I'm a belt-and-braces kind of gal!
My
Brinsea wasn't that much - bought in the UK from
Ebay. That are pricier elsewhere though. I just sold my old
brinsea octagon on
ebay in the US for I think US$130 plus shipping, so there are cheaper used options. I don't know about in Australia though...I'm lucky because although we live in Italy we have a US PO box address, and UK places often ship to Italy too, so I can often source things from Europe, UK and the US to get the best deal.
My chicken with the broken hip/leg...well, I think I mentioned (maybe I didn't), our garden is on the side of a steep hill. It is mostly terraced. The first tier is about 12 to 15 feet up from the driveway level and that's where the chicken house is. Sometimes they fly off the wall, but mostly they jump down the steps if they want to come down to visit us.
I didn't see it happen, but we found the hen on the driveway, I presume she stumbled over the edge of the tier and was facing backwards so couldn't flap enough to break her fall by flying. (I've seen her fly off there and land no problem in the past, so must have been bad positioning)
I put her in a nest box with food and water to see if her leg would heal, and it was doing great - she was at the point where she could stand for a minute on it, then would sit down and rest. Then we went away to florida leaving her in the care of my housesitter, and she said she got worse while we were gone, and now won't stand at all, so her time has come, sadly.
Things going from bad to worse this weekend - one of my 6 week olds just did a bloody poop. Seems fine in every other way, so now I'm searching frantically for info on that.
Seriously, I can't lose a 5th this weekend can I? They are all separated - the adults are up the hill, the 6 week olds right by the house in the front garden and the chicks are in the house in their brooder...really, really bad luck going on here!