1. There are four safe observation points overlooking the seabird colonies, but visitors must keep to the clifftop path -- sheer, high cliffs are dangerous. 2. Seabird colonies in the Shetland Isles are recording significant breeding successes after a number of years of declining numbers. 3. In the past the harvesting of seabirds for food and the predation by animals introduced by humans had a major impact on seabird colonies. 4. There have long been efforts to control gulls at airports, landfills, reservoirs and seabird colonies. |