The PISI's are here
- Huge numbers of Pine Siskins have arrived in Juneau this winter.
- One of the main attractions for them is the abundance of alder cones.
- They feed heavily on the seeds within these cones.
- How many do you think they need to eat in a day?
- What is the nutritional quality of these seeds?
- Why do Pine Siskins fight at bird feeders but not (usually) at alder trees?
- Look at this essay by Mary Willson on Pine Siskins and Redpolls