Other opportunist ant-eating birds include sparrows, wrens, grouse and starlings. European starlings and house sparrows compete with martins for nest cavities. House Sparrows, European Starlings, and House Wrens also compete fiercely with bluebirds for nest cavities. Introduced species such as European starlings and house sparrows are competitors for nesting sites. Thousands of starlings occasionally fly in flocks above Gretna. The starling makes it to Canada, and joins with an immense flock of other starlings. Bulbuls, starlings and house swifts can be found in urban areas. These flocks may include other species of starlings and sometimes species from other families. From May 2012 she stars in the Sky1 comedy series "Starlings" as Jan Starling. Coyle also played the character of Terry Starling in the short-lived Sky comedy series "Starlings". The diets of the starlings are usually dominated by fruits and insects. Like most starlings, the common myna is omnivorous. The alarm call is a harsh scream, and while foraging together common starlings squabble incessantly. Common starlings are hosts to a wide range of parasites. Starlings and their relatives will completely avoid sucrose.