Spring migration is now well underway. The ridge area of Mud Lake was quite bird-y this morning with bird song coming from every direction and elevation. Warbler species I saw this morning included Nashville, Blackburnian, Black-throated Green, Palm, Yellow, and Yellow-rumped. I believe I also heard the song of a Northern Waterthrush. Both of the smaller heron species, the Black-crowned Night Heron and Green Heron are back. There was a flock of White-throated Sparrows around which included this White-crowned Sparrow. In sharp contrast to what I experienced in the ridge area the woods were dead quiet except for the odd Pine Warbler trill and one song that I didn't have the slightest idea who it belonged to. There always seems to be a few of these mysteries when it comes to migration! One of the migrants I saw this morning wasn't even a bird but a dragonfly, a Common Green Darner. I wasn't sure what I was seeing when I saw this bluish colored dragonfly, but a chance encounter with our local dragonfly experts put me on the right path. Male Common Green Darners have blue abdomens and that blue threw me off. I also had my first damselfly of the year this morning and more Red Admirals.