Rats also swam to one breeding island in April 2005, but were successfully eradicated within two weeks without loss to the Cahows. Unfortunately this pattern appeared to be repeated in March 2008, with five chicks killed on one of the nesting islets. Immediate baiting produced a dead black rat, "Rattus rattus". However, as the islands were all baited at the beginning of the nesting season, this incident pointed out the need for constant vigilance of reintroduction and a requirement to provide fresh bait on the islands throughout the nesting season. This was underlined by further invasions of some of the nesting islands, including Nonsuch Island, in 2014 and 2015, although this time without loss to the birds.