Goldfinches on Thistle — Gallery CanvasThree goldfinches work through a thistle patch a male feeding on a spent seedhead at left, a second male perched on the right, a female arriving from above with wings still open. The thistle is rendered with the botanical precision Glen brought to all his plant subjects: the spiny bracts, the purple bloom, the white plumed seeds drifting into the composition from the milkweed at left. This 1988 watercolour is more complex than the earlier single bird