Discover why these birds are called Great. Visit one of the largest rookeries in the Seattle area. Learn about your connection to this amazing bird and how their continued survival depends upon you. Wear your walking shoes as we walk as much as one mile. 94319 REGISTRATION - Go to www.seattle.gov/parks and use the online registration system - SPARC. You need to sign up for an account and obtain a pin number in order to use the online system. This may take up to 24 hours, so plan ahead. Once you have your pin number, use the course code number listed in the program description to find the program in the SPARC system. The course code number is shown following the sign. Another way to register is to contact Discovery Park or Camp Long Environmental Learning Centers and a staff person can register you for the program of your choice. Free