 In the middle of the day, they often stop foraging to preen.Some individuals defend their feeding territories year round, while others forage in non-territorial flocks, sometimes in mixed-species flocks with sanderlings ("Calidris alba") and curlew sandpipers ("Calidris ferruginea").The white-fronted plover is a monogamous solitary breeder with a life expectancy of approximately 11 years.