Some things I forgot from yesterday:

This waterlily pad showed up yesterday.  I'm not sure why there's just one... I expect many to come, with flowers in the summer.
Students found this egg on the trail.  They all assume it's a robin's egg, but it's actually a bit more pale of a blue.  Starling?

Today's additional birds:

cardinal.  That's all we saw today that we didn't see yesterday.

Leafouts:

1 part of 1 precocious linden/basswood.