Santa Clara County Checklist derived from the Santa Clara Valley Audubon Society's Santa Clara County, California Bird Lists, maintained by Brooke Miller.
A Summary view aggregates bird observations from all your checklists across different time spans (week, month, year, etc.) and geographic locations, sorting the information in various ways.
World bird family names and world birds come from the Clements Checklist, from the Cornell Lab of Ornithology’s eBird/Clements checklist of birds of the world.
Birdathon is a tool for recording your bird observations, organizing your bird checklists and sharing your birding adventures with others.
County boundary data is from the United States Geological Survey (USGS) TIGER/Line 2019 Shapefiles found on the United States Census Bureau's website at Boundaries should be used as general guidelines and not be considered precise.