Minnesota’s occasional winter birds An irruption is defined as a sudden change in population density of a species in a location. Simply put, it’s an influx of a bird species (or multiple species) that we don’t usually see in our area. Irruptions can occur in response to an increase in a species populations or a change in movement patterns based…
Welcome Pine Siskins and Common Redpolls This is the time of year when you may begin to see some less-common visitors to your backyard feeding stations. Every few years, we experience an “irruption”—an influx of typically northern-dwelling birds—into our Twin Cities Metro Area and beyond in Minnesota. The irruption is often due to poor crops of conifer seeds (pine and…
This is the time of year when you may begin to see some less-common visitors to your backyard feeding stations. Every few years, we experience an “irruption”—an influx of typically northern-dwelling birds—into our Twin Cities Metro Area and beyond in Minnesota. The irruption is often due to poor crops of conifer seeds (pine and spruce) and catkins (birch and alders) that…