Guides
Straightforward help for finding birds and reading the map.
How to read a bird map
What the dots mean, what a model means, and why we keep the two apart on every map.
Using range and timing to actually find a bird
Two questions decide most sightings: is it here, and is it here now? Here's how to answer both.
Spring migration, explained simply
Why birds move north in spring, how fast it happens, and how to be ready when the wave hits your area.