|Ruby-throat migration continued to advance this week, and has nearly reached 40°N latitude. Observers are now reporting from Missouri, Tennessee, and coastal areas of Maryland and New Jersey.
How are temperature and ruby-throat migration related? Explore the maps and look for patterns.
Ruby-throat in South Dakota
A month early — and 385 miles off course — a female hummingbird was found in South Dakota last week. Was she carried north by strong southerly winds?
In addition to the female found in South Dakota we have two more sightings reported during that time.
Rufous in Alaska
Meanwhile, rufous hummingbirds have made their way north into the Alaskan Panhandle this week.