Do you have a favorite axiom or indicator that tells you spring has arrived? As usual, the Masked Biologist has much to say on the topic in this week’s Wildlife Matters. Spring is a tricky season, no two ways about it. There is so much riding on the arrival of spring, and springtime conditions. Animal migration, emergence from winter dens, plants leaving dormancy all heavily impact the Northwoods. Timing is everything; birds have to nest at the right time—songbirds need copious insects to feed