For the tree; separate observation for the obscured bird.
Piper Spit, Burnaby Lake, BC, Canada
Piper Spit, Burnaby Lake, BC, Canada
Piper Spit, Burnaby Lake, BC, Canada
Campbell Valley Regional Park, Langley, BC, Canada
For the host; separate observation for the leaf miner here: https://www.inaturalist.org/observations/211310612