BBC-Galapagos/#35:15 Galapagos Sea Lions competing to be beachmaster
BBC-LifeOfBirds/1.3_TheInsatiableAppetite/#7:35 Acorn Woodpecker (Clark's nutcracker remember 2K caches pine seeds)
BBC-BluePlanet/3.5_SeasonalSeas/#14:10 Giant Kelp/bryozoans, Otter using rocks to open clams
QL785 .A656 2003: Animal minds
weaver_birds review
Canon PowerShot camera

0. otolith: inner ear calcium carbonate crystals. sensitive to gravity/acceleration: magnetic materials in fish and birds.
1. Weaver males brightly coloured; buffalo-weavers colonial - males weave the nests and use them as display.