Last year, Goldfinches did not appear in the Creek Field at all until August, when the Tall Thistles bloomed & set seed.
This year, Goldfinches put in an occasional appearance in June (sitting atop the Musk Thistle, wouldn't you know). In July, they appeared in great numbers throughout the Creek Field, enjoying the Sawtooth Sunflower & the Whole-leaf Rosinweed. In this video, Goldfinches are not waiting for seeds but are feeding directly on disk flowers. Meanwhile, a sound track is provided by perpetually-singing Dickcissels!
Dickcissels have also moved further into the interior. Traditionally, they nest in the plums along the driveway or in the Field Buffer along the Loop Path. (I have never seen or heard them in the Riparian Buffer.) But this July they have moved into the Creek Field, with numerous nests on or close to the ground. Females I see only as brown blurs diving back to their nests. The males I'd have to be blind and deaf not to see or hear, as they like to sit atop tall plants and sing all the time! Here Dickcissels sing while sitting on Sawtooth Sunflower and Giant Ragweed:
My records of the Creek Field in July 2015 do not include a single photo of a bird. The Creek Field in July 2016 is blessed by birds!