BirdsEye have created a special free version of BirdLog (eBird submission via mobile device) for the Great Backyard Bird Count (GBBC) available for free. It appears to be a fully functional version of BirdLog that will work for 60 days. If you use eBird, I highly recommend BirdLog, and this looks like a good way to try it for free. I find it a lot quicker than the web interface even if I'm not in the field. There's more info and links
here.
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