The easiest way to
do this is to:
Register on the Bird Atlas
2007-11 webpages
Click here
Click on Add Roving Records. Here you will see a map.
Zoom in on the area you will be birdwatching in and
note the Grid reference at the bottom right-hand side
of the map. Eg. NZ71 is the 10km square the additional
letter is the tetrad, this is also useful to know
as it further refines where the birds have been seen.
If your trip is going to visit two 10km squares it
is important to record which birds were seen in which
square. Please print additional forms for each square.