News

A warm up forecast for the East brings a flood of new arrivals during the week and a chance for more fallouts along the Gulf Coast, as much of the West continues to experience typical spring arrivals. See this animation…

Numerous species were on the move in the West this week where light and moderate movements occurred in many areas, whereas hints of the opening of the flood gates to come appeared in several fallouts and some locally moderate and…

Several weeks ago, Team BirdCast highlighted a set of conditions for spring overshoot migrants, or “slingshot” migrants, to occur substantially farther north of their intended and seasonally appropriate destinations. We see potential for such conditions over the coming 24-48 hours,…

This week’s migration forecast features an opening of some flood gates for migrant arrivals in the Eastern and Central US, while new arrivals continue to move across many areas of the West.

Many areas of the West begin the weekend with…

Wilson’s Warbler was on the move in portions of the West and Gulf Coast and Southeast this past week. This bird was photographed by Brian Sullivan.

Scattered light movements began the period, particularly in the California and portions of the Desert…

This week’s migration forecast features the arrival of a strong high pressure center over the US, which will shut down migration as it approaches and builds, several disturbances that may spawn fallouts, and the potential for some European vagrants to…

Spring migration continues to ramp up slowly, and early migrants such as Western Kingbird began appearing in numbers during the past week. This individual was photographed on 16 April 2007 by Brian Sullivan.

Scattered light migration occurred in several areas over…

We continue to track the Eastern promises that we highlighted in December, as this past weekend provided yet another tantalizing example of the potential fruits of such promises. A Fieldfare was discovered in Carlisle, MA and seen and photographed by…

This week’s migration forecast highlights favorable conditions for migrant arrivals in the Gulf Coast region and unfavorable conditions for migrants to advance into much of the West, Great Plains and Upper Midwest and Northeast because of late winter-early spring storms…

Scattered light migration was apparent in some areas of the West, particularly on Wednesday and Thursday nights. The image below, from Thursday evening 14 March 2013, shows light movements in California and portions of the Desert Southwest. Some of this…

This week’s migration forecast highlights the effects of a strong frontal boundary crossing the country, facilitating light and scattered moderate movements with its approach to a region and shutting down migration in its wake.

Scattered light migration in the Pacific Northwest…

Although we are still quite early in the season to discuss the potential for a “slingshot” event that might cause typically southern spring migrants to overshoot their intended destinations along the Atlantic Coast, and although these events are relatively rare…