News

Scattered precipitation across the region this period will add a new dynamic to West, with light to moderate movements featuring Common Nighthawk, Western Wood-Pewee, Eastern Kingbird, Western Tanager, and Lazuli Bunting where precipitation is not falling mostly early in the week in the Southwest and central and southern Rockies, while an early period blast of moderate to heavy movements featuring White-rumped Sandpiper, Common Nighthawk, Willow Flycatcher, Yellow-bellied Flycatcher, Philadelphia Vireo, Tennessee Warbler, and Blackpoll Warbler gets swept aside with the passage of a strong frontal boundary in the middle of the week.

A brief pulse of light to moderate flights that will include American Avocet, Marbled Godwit, Western Sandpiper, Western Kingbird, Barn Swallow, Black-headed Grosbeak, and Bullock’s Oriole on either end of the forecast period highlight otherwise unfavorable conditions across the West, while a relatively weak front drifts east mid week bringing light to moderate flights of Osprey, Greater Yellowlegs, Semipalmated Sandpiper, Ruby-throated Hummingbird, Purple Martin, and Tree Swallow first to the northern Plains, then the Great Lakes, and finally the Appalachians and portions of the eastern seaboard.

As of 1130AM CDT a pair of cold fronts is approaching the Gulf Coast. Most precipitation is presently North and West of the coast, but in the coming hours it will advance to the Gulf of Mexico. Trans-Gulf migrants are…

Widespread favorable conditions that bring light to moderate flights including Solitary Sandpiper, Western Wood-Pewee, Dusky-capped Flycatcher, Gray Flycatcher, Warbling Vireo, Orange-crowned Warbler, Yellow-breasted Chat, and Black-headed Grosbeak to the West early in the week become increasingly restricted to the Desert Southwest by the end of the week, while the arriving major pulse of southerly flow and warmer air toward the end of the weekend in the East brings moderate to heavy, and locally very heavy, flights for the rest of the period that will include Broad-winged Hawk, Least Sandpiper, Olive-sided Flycatcher, Veery, Wood Thrush, Wilson’s Warbler, Mourning Warbler, Black-throated Blue Warbler, Lincoln’s Sparrow, White-throated Sparrow, Rose-breasted Grosbeak.

Although many species in the US and Canada have been on the move for the past month or more, BirdCast begins its seasonal regional migration forecast and analysis series. Please check visit us frequently to see updated weekly posts about…