Jackson Bottom Wetlands Education Center, Hillsboro, Oregon on 17 June, 2010 by Greg Gillson.
Spring weather may continue at Jackson Bottom Wetlands Preserve in Hillsboro, Oregon. However, spring bird migration is over.
All birds detected this week were summer residents. Some are singing to declare their territory or attract a mate. Most, however, have already begun nesting--some for the second time. For instance, the AMERICAN ROBINS nesting in the Kingfisher Marsh view shelter completed building their second nest.
Many birds are feeding young. The parents are going one way with a bill full of worms, and back the other way a few minutes later with a fecal sac for disposal.
Some of the confirmed breeding activity observed this week includes COMMON YELLOWTHROAT carrying food to the nest. Recently fledged birds just out of the nest include SONG SPARROW, LESSER GOLDFINCH, MARSH WREN, and VIOLET-GREEN SWALLOW.
The nestling BALD EAGLE "chick" is now 8 weeks old and nearly as large as its parents. It has been noted hopping up and down on the nest flapping its wings. It will not be ready for its first flight for several weeks yet.
This week's list of detected birds is quite a bit shorter than what's actually here. Chest-high grass, soaking wet from continuing showers, clogs some of the trails (but as I write this I hear the Hillsboro Parks crew mowing some of it down).
Great Blue Heron