Ruby-throated Hummingbird with Red Columbine — Framed Piece Art Prints Glen observed nesting birds with

Glen observed nesting birds with the discipline of a naturalist who understood how disturbing that observation could be

This 1973 watercolour is Glen at his most naturalist: the elf owl

each bird placed with its own specific posture and intent

long tail fanned

Mallard ducklings — a cluster of them

Ruby-throated Hummingbird with Red Columbine — Framed Piece Art Prints Glen observed nesting birds withA Ruby throated Hummingbird hovering at a Red Columbine the bird frozen mid hover, the gorget iridescent, the bill aligned with the long spur of the columbine flower. This is the perfect mutualism made visible: the columbine evolved its long red spur specifically for the long bill of the hummingbird, and the hummingbird evolved its hovering flight specifically for this kind of feeding. Glen painted the relationship as precisely as its biology. The Red