eBird News and Features

BirdCast Forecast: 18 - 24 May

BirdCast Migration Report: 11-17 May

Diversity and abundance of migrants remained high across much of the US during this forecast period. Presumably, this period and the next will be the last to have such diversity and abundance during this spring season, as many migrants have arrived or will soon arrive at their breeding destinations. Moderate to heavy movements occurred more often than not across the eastern half of the country, whereas widespread light to moderate movements were the norm in the West. See below for a bit more detail on the happenings of the past week!

BirdCast Forecast: 11 - 17 May

High pressure will dominate much of the country during this forecast period. The West will experience widespread light to moderate migration this week, as high pressure and warmer temperatures build in across most of the region. Moderate to heavy movements will occur in the Great Plains, despite scattered precipitation that may inhibit movements locally. Despite largely unfavorable winds aloft for much of the period, most areas of the Upper Midwest and Northeast will experience moderate to heavy movements this week; the threat of scattered precipitation will diminish movements in some locations. The Gulf Coast and Southeast should see an influx of trans-Gulf migrants in the western Gulf early in the weekend, in the eastern Gulf early next week, and generally widespread moderate to heavy movements inland, despite some periods of unfavorable winds aloft and the threat of scattered precipitation early in the period. Birders in coastal areas should watch for potential fallouts through the early portion of the week.

BirdCast Report - 4 - 10 May

As one might expect near the peak of spring migration diversity and abundance, this week saw nights with moderate to heavy migration across many areas of the continental US. In fact, higher than expected migration amounts occurred on several nights during the forecast period in multiple different portions of the region. Although we could easily chalk these anomalies up to slight differences in the observed weather relative to the original forecast, a better explanation is that we underestimated birds' drives to reach their destinations! Read below for a brief summary of last week's migration, and read this week's BirdCast Forecast to know what to expect in the week ahead. 

Fill in the gaps--bird the road less traveled (May 2012)

eBirders often email us and ask where they should go birding in order to make the biggest impact in regions with little data. It's perhaps little surprise that eBird checklist submissions are most dense in areas with large human populations, so getting away from those areas is a good first step for filling in the data gaps in eBird. But seeing these gaps can be really astonishing, and with the help of map wizards Paul Hurtado and Tom Auer, we've come up with a few neat ways to visualize eBird data density at the county level. These maps are a visualization of the total number of eBird checklists submitted in each US county in the month of May across all years, or the total number of checklists per square mile of county area--a better way to see data density in states with large counties. So find a county that has sparse data, and then go do as many eBird checklists as you can there this May!

Remote eBirding on Laysan Island

Those who closely follow recent conservation measures in the United States may have already heard about the historic reintroduction of the Millerbird to Laysan, an island in the northwest Hawaiian archipelago. But for many birders, this obscure Old World warbler is probably unfamiliar--the only member of its family endemic to Hawaii. In this article, we follow two eBirders--Cameron Rutt and Robby Kohley--as they provide a glimpse of the abundance of bird life that surrounds the Millerbird on its new-found home. For more information on the Millerbird, including the first successful fledgling (!), please visit see this website. Many thanks to Cameron for providing this exciting account of their visit to Laysan, the vagrants they found and documented, and how they used eBird to quantify the abundance of seabirds and other specialties on this remote Pacific island.

BirdCast Forecast: 4 - 10 May

As several low pressure centers and their associated precipitation progress across the country, migration levels will vary more than usual. Primarily light to moderate movements will occur across more southerly portions of the West, whereas precipitation and generally unfavorable winds aloft will keep most migrants in more northerly portions grounded. Although a few areas of the Great Plains may see moderate to heavy movements early in the period and scattered movements for the remainder of the period, most areas will experience rather poor conditions for migration on most nights this week. Poor migration conditions will prevail more often than not across the Upper Midwest and Northeast, but birders should watch closely for marginally favorable migration conditions to develop, possibly producing moderate movements and fallouts may occur. The Gulf Coast and Southeast are in for another week of moderate to heavy movements, punctuated by a strong possibility of fallout conditions from Texas to the eastern Gulf late in the period.