It is not unusual to think of thistles as an unwelcome occurrence in the landscape. The invasive Canada thistle can indeed be a pretty nasty customer to get under control.
Yet, our American Goldfinch, a colorful yellow and black bird, observed widely throughout Flyover Country, finds thistle much to its liking. In our area the finches nest late, usually in July and August, waiting until there are plenty of seeds available to feed their young. The thistle seeds are high on their preferred- list.
Indeed one species’ trash is another species’ treasure. A diverse landscape is certainly good for wildlife, in general.