Average latitude of this week's reports was 42.9 N—the same as last week—but robin abundance has increased as robins continue moving from south to north. Ontario and Wisconsin led in first-seen robins, followed by Illinois, Michigan and New York. The Great Lakes area and parts of Canada showed the most northward progress, and four Canadian provinces accounted for 36% of our total reports.
The burst of song reports is still ahead, but the week's most musical states were Michigan and Wisconsin.
Robins are announcing spring's arrival in reports like these:
"Suddenly there are multiple Robins on everyone's lawns!" 03/21/15 Betsy K. in Two Rivers, Wisconsin
Despite the spring equinox, we may still face cold snaps and snowstorms with early spring's variable weather. The good news is that spring has begun!
How Fast? How Far?
High Elevation Robins