As I watched and zoomed, Mama appeared on the railing with a HUGE worm in her beak. She hopped down to the floor, then across to baby bird.
almost chocking on it (mama - I HATE worm! "eat your worm or you don't get any candy")
The arm on the inukshuk, made a perfect feeding perch, and you can see in the series of photos how the worm is passed from Mom to Baby. When she was sure it was completely swallowed, she took off, leaving the lad perched where he was, content until the next course of worm arrived.