KEEN twitchers are being asked to keep their ears open for the sound of cuckoos at Meldon, as Dartmoor cuckoos are returning to Britain from their African wintering grounds. The Dartmoor cuckoo project began with the tagging of four Dartmoor birds last year, and organisers are waiting for the two birds who survived the arduous migration to Africa to make it back to British shores. Moorland around Meldon is one of the best places on the moor to hear the distinctive song of the cuckoo. Bird watchers and walkers are being asked to keep an ear out for the birds, and report any locations where they hear the birds. In 2013, the Dartmoor National Park Authority (DNPA) in partnership with Devon Birds, took part in a ground breaking satellite tagging project run by the British Trust for Ornithology (BTO) to learn about the migration of Dartmoor's cuckoos and start to understand the reasons for their alarming decline. In May 2013, satellite tags were put onto four Dartmoor cuckoos, named Dart, Ryder, Tor and Whortle. Sadly, two of the cuckoos died on their way to their wintering grounds. Contact was lost with Dart in Mallorca and Ryder perished during his Sahara crossing. Tor and Whortle both made it successfully to the West African rainforests. British cuckoos are now beginning to return, with most of the tagged cuckoos, including Whortle, now in Spain. Meanwhile, Tor's tag appears to have developed a fault but the DNPA is hopeful to welcome them both back on our shores soon. You can follow their routes by following the links on the website http://www.dartmoor.gov.uk/lookingafter/laf-naturalenv/cuckoo">www.dartmoor.gov.uk/lookingafter/laf-naturalenv/cuckoo Devon Birds have created a live web map that allows members of the public to enter their cuckoo sightings on a simple form. That record, together with any others that have already been submitted, can be seen on a live map on the Devon Birds website http://www.devonbirds.org/birdwatching/recording/cuckoos">www.devonbirds.org/birdwatching/recording/cuckoos George Harris, chairman of Devon Birds, said: 'Despite the cuckoo being such an iconic bird, very little is known about their numbers, distribution and behaviour here on Dartmoor. We are hoping to gather more information about cuckoos locally by asking the public to contribute. We are using new technologies such as interactive maps, as well as the more traditional method of picking up the phone to get people to tell us where they have seen a cuckoo.' In 2014, DNPA and Devon Birds are funding the tagging of a further three birds to help gather more data on the lives of Dartmoor cuckoos. The progress of these three birds, in addition to the two cuckoos from 2013, will be tracked and can be followed online. Naomi Barker, DNPA Ecologist, said: 'We are slowly building a picture from all the different pieces of the complex puzzle that is the life of the cuckoo. The satellite tagging is providing us with a lot of data on their international movements, so together with getting more data on their local whereabouts, we will hopefully have a much better understanding of what is causing the declines and be able to start doing something about it.' You can report your cuckoo sightings by going to the Devon Birds website . You can follow Tor and Whortle's journeys by going to http://www.dartmoor.gov.uk">www.dartmoor.gov.uk, http://www.devonbirds.org">www.devonbirds.org or http://www.bto.org/science/migration/tracking-studies/cuckoo-tracking">www.bto.org/science/migration/tracking-studies/cuckoo-tracking