Before the trees have fully leafed out this spring, take advantage of the improved visibility to spot birds. The arb is a breeding destination for many species, and serves as temporary way point for a large number of additional migratory species. Look for migrating waterfowl on Lyman Lakes and the Cannon River in late March and April. Spring warblers are abundant in May along the river trail, in the floodplain forest, in Best Woods and near Spring Creek in the Upper Arb
Yellow-rumped Warbler (Dendroica coronate) This common warbler species can be observed during spring and fall migrations in wooded areas of the Arb. Its name is derived from the characteristic and highly visible yellow patch above its tail.