Last night was a decent night of migration, however a stationary front parked just south of Pennsylvania limited the volume of migrants heading north. You can see in the regional composite map above from around midnight that there was much less detectable migration between the front and the storm. Migration was evident from Florida and the Gulf Coast north through the Northeast, which always means new arrivals. Look for the full suite of colors to be arriving in our region, including Indigo Buntings, Rose-breasted Grosbeaks, Baltimore Orioles and Yellow Warblers. These species should be showing up scattered across the region, while some of the earlier arrivals like Louisiana Waterthrush is filling in territories on mountain streams.
I don’t always have time to comment on the radar in each state. To interpret it yourself, read the quick tutorial at the bottom of the page.
Pennsylvania & New Jersey
Maryland and Delaware
Quick guide to interpreting the radar
On the top row (reflectivity radar), the images show the magnitude of migration. When birds are migrating, it looks like a donut shape around the center of the radar station.
The bottom row is the velocity radar. This shows the direction that the objects detected by the radar station are moving. Blues are moving towards the radar station, yellows and reds are moving away from the station. So for southbound migration, blue should be on the top half of the donut, yellow on the bottom half.
Watch for precipitation moving through during the night hours, this can cause birds to stop migrating in a concentrated area, creating the fabled ‘fallout’, particularly on nights with strong migration.
For more in depth info, watch this video.
For migration updates or other regions check-
Upper Midwest – Woodcreeper bu David La Puma
Michigan’s Upper Peninsula – The Northwoods BIRDAR by Max Henschell
New England – Tom Auer’s blog
Florida/SE – Badbirdz Reloaded by Angel and Mariel Abreu
NW Ohio – Birding the Crane Creek by Kenn Kaufman
Pac NW – Birds Over Portland by Greg Haworth
Continental US – eBird BirdCast Forecast & Report by Team eBird
I need your help! These reports will only be as good as the feedback I get on these updates. Please leave comments on interesting patterns of migration you are seeing in the field so I can incorporate some ground truthing to my forecasts and predictions. Thanks!