BDMC Spring 2023
The sightings you see here are being collected on a tablet by a biologist out in the field.
Hover your mouse over the points on the graph to see more details. Click on different species in the legend to show or hide them on the chart.
If there's nothing showing, it may mean that this site doesn't have access to the internet or isn't counting right now.
No Reports in the Last Two Hours
The time shown in the top row is the start of the one hour period.
Choose a date to load the hourly table for that day. Only days that have data are shown.
Species composition changes over time depending on weather, seasons, and many other factors. This chart displays the composition over a time period you select.
Click on pie pieces to see more detail. If there are more than seven species, click on "Other" to see a breakdown of the rest.
Many sites have a protocol that is designed to maximize finding particular species. If you select "Focus Species," only these species will be shown.
The control box below the pie chart lets you select a date period for the chart.
You can push the buttons "1d," "1w," or "1m" to zoom the graph to 1 day, 1 week, or 1 month.
The graph shows the overall volume seen on each day. You can drag the sliders on each side of this graph to adjust the start and end dates.
February 14th to September 25th
These charts show which species are most numerous at different parts of the season. Hover your mouse over a chart to see the number for a given day. The right column shows season totals and the left side shows the maximum for a single day. Each graph is scaled so that the single-day maximum is the highest point on the chart.
- Focus Species: Show the highest priority species at the top of the list.
- Taxonomic Order: Sort the species by their scientific classification.
- Alphabetic Order: Sort the species by their common name.
- Abundance: Sort the species with the largest number counted at the top.
BDMC Spring 2023
Migration Monitoring at Bear Divide
Bear Divide Migration Count
Moore Laboratory of Zoology at Occidental College
About the Data
All data displayed on this site are preliminary and have not yet undergone quality control. Written permission is required to use the data.
Pasadena Audubon Society | Woodstar Biological | LA Birders