Summary:
- For the past 30 years, a group of dedicated birdwatchers in Saint John, New Brunswick have been monitoring the migration patterns of birds in their local area.
- These "birders" keep detailed records of the different species of birds they observe, the dates they arrive and depart, and any changes in their numbers over time.
- This long-term data collection helps scientists understand how bird populations are being affected by factors like climate change, habitat loss, and other environmental changes.