A few nice thistle bird seed images I found:
Bull thistle/Cirsium vulgare
Image by mcfsharonbrown
Grows to 6′, with spiny stalks, leaves and flower bracts. Purplish flowers to 2" diameter bloom atop "gumdrops." Too thorny for animals to eat, and it forms dense colonies, so it can ruin a pasture. Spreads by seeds, and has spread from europe to all 50 states. Many birds love the seeds!
Tags:bird, Cool, images, seed, Thistle
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