usual cold weather in the southern part of the state, while the Red Lake area in north-central Minnesota enjoyed unseasonably warm weather at scattered intervals throughout the month. Elsewhere in the state, temperatures alternated between normal and much warmer than normal. The last week of March brought a record-breaking warm spell to almost the entire state.

During this period, considerable insect activity took place. The Mourning Cloak butterfly put in its appearance and Minnesota's first March records for three species of tiger beetles were secured.

The first week of April continued the warm trend. On April 6, an Amer· ican Painted Lady butterfly was seen at Encampment River on the North Shore and an Angle-wing was seen near Fond du Lac, south of Duluth.

Then temperatures dropped to normal until mid-April. On April 14, the Spring Agaristid moth and Milbert's Tortoise-shell butterfly had emerged in St. Paul. A few days later, strong southwest winds brought a few early migrants, taking their cue from the warm weather. A sudden cold wave arrived, including snow. Migration here was interrupted, and most areas seemed virtually birdless for about a full week after the storm. Then a few more early migrants arrived, some of them considerably ahead of sche· dule, while others were strangely late.

May began with warm sunshine and the usual migrants. By the end of the first week, however, the rain and cold allotted usually to April, had arrived. This continued for most of the month, interspersed with brief periods of warm, seasonable temperatures and sunshine. On May 4, American Toads were calling and Wood Anemones, Trout Lilies, Bloodroot, yellow and purple Violets, mint, Phlox and Bluebells were in bloom at Vasa, Goodhue County. A Tiger Swallow· tail butterfly was seen the same day at Frontenac, Goodhue County.

This report covers the period from March 9 to June 1, approximately.