I will summarize some work on the link between individual behaviour and the dynamics of the swarm/flock. I will highlight two projects: 1. The behaviour of a 2D flock of aquatic birds, and how Ryan Lukeman (former PhD student, now at St FX University) figured out the underlying individual rules 2. models for social foraging, an ongoing project in my group joint with Nessy Tania, Ben Vanderlei and Joel Heath.