San Francisco Zoo on Instagram: "We held our annual penguin round-up today, when all 51 of our Magellanic penguins received their yearly physical check-up! With all hands on deck between the veterinary and bird teams, the process went by smoothly. Each individual penguin was weighed; beaks, feet, wings and eyes inspected, and body conditioning scores taken. The examination also allows vet staff to determine if further medical treatment is required, or if they observe an anomaly that requires add