The first longtail of the Spring has arrived on Bermuda's shores, according to Andrew Dobson, President of the Bermuda Audubon Society.He spotted it flying along South Shore early this morning, near Church Bay."Small numbers of longtails are usually seen in the early part of February but the majority do not return until March or April."These birds have been spending the winter on tropical waters to our south. They only come ashore to breed, each pair laying a single egg."Bermuda is a very important breeding location for the White-tailed Tropicbird (longtail) with as many as 2,000 pairs returning to our shores each summer."He said that over the years, cliff nesting sites have been lost due to housing and commercial developments, not to mention cliff collapse due to severe storms. The natural cliff cavities in which longtails nest can take hundreds of years to form.The Audubon Society has initiated a successful programme of artificial nest ‘igloos' for longtails. "Hundreds of these have been installed on appropriate sites around Bermuda.Mr. Dobson added: “I would urge members of the public to check regular nest sites and remove any trash that may have become lodged in cliff holes."Providing a small amount of sand in the base of the nest will also encourage the longtails to breed as the egg is laid on bare rock."Useful websites: www.audubon.bm, www.bermuda-online.org/fauna.htm