Here they gather E. Red Cedar pollen until something better comes along. E. Red Cedars are really junipers is my understanding. As Michael says, its not a very good pollen protein-wise, but it's better than nothing (or sawdust). They apparently can raise some brood with it, but broodrearing really takes off when the Red Maples bloom. I live in town where people planted Red Maples. In more rural areas around here, there are not many Red Maples, but there are more willows, which also bloom early. Deadnettle and then Dandelions follow, and its off to the races.
I'm planting some sugar snap peas and arugula in the garden tomorrow, with hope in my heart. Bring on Spring!!!