Regarding monitoring status of migrants, you can use eBird's Bar Charts for
an overview. By filtering you can get a pretty decent picture. Here is a
bar chart for just King County in 2024.

https://ebird.org/barchart?byr=2024&eyr=2024&bmo=1&emo=12&r=US-WA-033

And you can filter even more via location. This is a chart for my most
frequent patch, Magnuson Park.

https://ebird.org/barchart?byr=2024&eyr=2024&bmo=1&emo=12&r=L269461

Scott Ramos
Seattle