This is something I've thought about for years. I will get around to doing it one day. My Idea (and I don't suppose for a minute that it hasn't been thought of before) Is to build a tripod to whatever level your wind is at, then put a wind catcher on the top with a shaft going down to a simple...
Sorry, can't help in the short term but long term, I know Guppies (pet fish) were introduced overseas. They breed prolifically and eat the mosquito larvae.
Alas, this is true. If you can get through the ooh's and aaah's and well dones, the information is there. My biggest problem is that it's mainly American and the chicken "culture" changes drastically sometimes due to the vast changes in temperature and climate.
I've just bought this one.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=220378989457&ssPageName=STRK:MEWNX:IT
I'll let you know what it's like when I get it.