News

The West experienced one of the last of the extensive light to moderate movements of the fall along the Pacific Coast and in the Desert Southwest, as the East experienced some widespread pulses of moderate movements and a few locally…

Extensive moderate to heavy movements occur over many portions of the East during this period, representing a serious change of guard from the last later season Neotropical migrants and the growing waves of intracontinental migrants, while the West experiences a…

Two pulses of movements rushed through the East, as continuing light to moderate movements were steady in the West. Birds on the move this week included Hermit Thrush, Ruby-crowned and Golden-crowned Kinglets, Yellow-rumped Warbler, White-throated Sparrows, and Dark-eyed Junco.

Most of…

Widespread light and moderate movements across the West are still apparent, as a major pulse of northerly flow brings a large flight to the East by midweek. Birds on the move this week will include Northern Harrier, Chimney and Vaux’s…

Pulses of light to moderate movements continued in the West, as a large movement in the East saw large numbers of birds moving across the region and transiting through and to the Southeast. Birds on the move this week included…

Both West and East experience periods of moderate to locally heavy movements this week, as the large but increasingly less diverse movements of October are in full swing. Birds on the move this week will include Golden-crowned and Ruby-crowned Kinglets,…

Widespread light and moderate movements occurred across the West during the period, including some coastal flights allied with Santa Ana winds in southern California, while two strong pulses of moderate movements occurred during the middle of the period in the…

A strong low pressure system is forecast to move across northeastern Asia and the northern Bering Sea late on Thursday 3 October and early on Friday 4 October. Forecasts call for strong westerly winds with this system, which is quite…

The West continues to show a patchwork of locally moderate movements in airspace free of precipitation, and the East gets another pulse of moderate to heavy flights, including in the Southeast and Florida, followed by another strong high pressure center…

Changeable conditions across the West spawned scattered and sometimes moderate movements in a patchwork across the region, as strong high pressure dominated the eastern US and spawned extensive and continuing moderate to heavy movements. Birds on the move this week…

In the wake of much discussion about atmospheric blocking in Fall 2012, Team BirdCast returns to the scene of the crime, so to speak. The Climate Prediction Center, among others, is forecasting a period of negative North Atlantic Oscillation (NAO)…

Birders along the Pacific Coast of the US, along with The Weather Channel and the Los Angeles Times, have certainly noticed the recent invasion of Blue-footed Boobies in California, whether you’ve read about it on eBird or seen it in…