Mystery bird. Please help. Was on ground short grass by marsh. Alone. White racing strips on outside of tail
Feathers. Robin size. Flashed tail open when walking. Lark sparrow ??
We happened upon an aquatic invasive specialist for the city of Minneapolis who was checking the status of plates submerged in Lake Hiawatha to monitor for Zebra Mussels. He identified this as a type of Bryozoan colony.