Ruddy turnstone but it feeds mainly on invertebrates. Insects are particularly important in the breeding season. At other times it also takes crustaceans, molluscs and worms. It often flips over stones and other objects to get at prey items hiding underneath; this behaviour is the origin of the name "turnstone". It usually forages in flocks. They have also been observed preying on the eggs of other bird species such as gulls, terns, ducks, and even other turnstones, though this behaviour is uncommon. In the majority of observed cases, turnstones typically go after undefended or unattended nests, puncturing the shells with their beaks
Turnstone (company) Turnstone's product development process involves meeting with business leaders and uses observational research from the IIT Institute of Design, IDEO, and the d.school at Stanford University. They also visit co-working spaces to study how workers interact with their products. Turnstone also researches and studies subjects like startup culture, company culture, and how people work. In 2013, Turnstone partnered with the Wharton School at the University of Pennsylvania to release a list of the 15 top young companies to work for. James Hackett became President of turnstone in 1993. Kevin Kuske was turnstone's general manager from 2009 to 2014. Brian Shapland