Showing posts with label Sea birds. Show all posts
Showing posts with label Sea birds. Show all posts

Tuesday, 20 May 2014

Winter Gulls and Scarce Visitors


Adult Herring Gull by Fran O'Connell
On February 4th, local birder Arlo Jacques discovered an adult little gull at the Tramore Boating Lake. This was the eleventh different species of gull to be recorded on this small lake in 2014.
                  
So what is the status of gulls this winter in Waterford ?

Let us first deal with the most commonly found species in winter in the county. Herring, greater black-backed, lesser black-backed, common and black-headed are all numerous and widespread during wintertime. When food resources, mainly fish, are readily available numbers of each species can be very large. Greater black-backed gulls are the largest gull occurring in our waters, followed by herring gulls and the slightly smaller lesser black-backed gull. Common gull is smaller again and black-headed gull is the smallest of this group.

Adult Winter Common Gull by Bernie Sheridan
Correctly identifying gulls can be a challenge at any time. Adult gulls have a summer and a winter plumage, but are easily sorted. However large gulls take up to four years to fully mature, and ageing gulls takes experience. Herring, greater black-backed and lesser black-backed are four year gulls. This is where matters get complex. These gulls have different plumages as juveniles, first winters, first summers, second winters, second summers, third winters, third summers, fourth winters, fourth summer/adults. Now combine this with various different races of herring gull and the results can be bewildering.

Adult Great Black-Backed Gull by Fran O'Connell

Common and black-headed-gulls take a mere two years to reach maturity.  Both have distinctive plumages as juveniles, first winters, first summers and second winters before reaching adulthood.



Adult Winter Black-Headed Gull by Fran O'Connell


Now that we have that lot sorted out we can attempt to find some of the rarer species which overwinter in Waterford. Throughout the coastal areas of Ireland there has been an unprecedented influx of ‘northern’ gulls this winter. The two species involved are glaucous gulls and Iceland gulls. Both are four year gulls but are distinguished from our regular gulls by the complete lack of black colouration on their bodies and wings. Glaucous gull is large, approaching greater black-backed in size and noticeably bigger than herring gull. Iceland is usually smaller than herring gull and looks more elongated. Both species have been observed in Waterford this winter at Ardmore, Whiting Bay, Ferrypoint, Helvick, Dungarvan, Tramore, Dunmore East and Cheekpoint. Again the individuals range from first winters through to adults.
Adult Winter Lesser Black-Backed Gull by Fran O'Conell


Amongst the Iceland gulls were a number of kumliens gulls, a distinct subspecies. These can be differentiated from Iceland gulls by varying amounts of darker colouration on the tips of their flight feathers. The first occurrences of kumliens gull in Waterford were noted at Helvick Head during January this year.   

Adult Glaucous Gull by John Power
Mediterranean gulls were once a rare visitor to Ireland. In recent years they have become established as a breeding species in this country. Mediterranean gulls are regularly seen at Whiting Bay, Ardmore, Dungarvan Harbour and Tramore.

Yellow-legged gulls are very similar to herring gulls in appearance but are now treated as a separate species. Adults are best distinguished from the herring gull by their slightly darker backs and yellow legs. Kinsalbeg and Dungarvan are good for this species although in very small numbers.

Adult Iceland Gull by John Power
Kittiwake (named for its call) is a pelagic species rarely coming to land other than to breed. The breeding colony at Dunmore East is justifiably famous for its easy accessibility to human observers. In winter kittiwakes come close inshore during winter storms. Little gulls are our smallest and daintiest gull usually encountered in Waterford during or immediately after storms. Helvick Head, Ballynagaul and Tramore are notable for this species.

Adult Winter Kumlien's Gull by Richard Zamora
Ring-billed gull is a North American species which is annual in Ireland albeit in small numbers. An adult ring-billed gull has turned up every winter for a number of years at the Tramore Boating Lake. It is often very easy to observe allowing an approach down to a couple of meters in the car park.

Kittiwake by Andrew Malcolm



In addition to the above, five other species of gull, as follows, have been recorded in Waterford. Caspian gull, as its name suggests, is an Eastern European/Central Asian species. Ivory gull is an Arctic specialist usually found scavenging on dead whales, seals and dolphins. Bonaparte’s gull is a North American species named after the nephew of Napoleon Bonaparte. American herring gull is the North American equivalent of our herring gull but now recognised as a separate species. Sabine’s gull is an August – October passage migrant named after Edward Sabine, a scientist aboard John Ross’s 1818 expedition to search for the North West Passage.

Adult Winter Ring-billed Gull by Bernie Sheridan
Interestingly two other species of gull have been named after personalities associated with the search for the North West passage - Ross’s gull after the aforementioned John Ross and Franklin’s gull after John Franklin. To date neither of these two species has been recorded in Waterford.




In total, excluding sub-species, 17 full species of gull have been recorded, to date, in county Waterford.
 










Tuesday, 4 February 2014

Pelagic Birding and Dolphins

Gannet by Andrew Malcolm
On Friday the 9th of August, 13 local birders and crew, captained by Martin Colfer, sailed from Youghal
along the Waterford coast in search of pelagic birds and perhaps some whales and dolphins.

Pelagic birds are birds of the open seas, which are unlikely to be encountered on land other than at breeding colonies.

Black Guillemot by Fran O'Connell
Gannets were quickly seen. These very large seabirds sustain themselves entirely by fishing. They dive into the sea, often from a great height, in pursuit of their prey. Once almost wiped out as a breeding species in Ireland, they are now happily thriving.

Auks (family name Alcids) are well represented in Irish waters by guillemots, black guillemots, razorbills and, everybody’s favourite, puffins. Looking comical and friendly puffins are, in reality, tough, ocean going birds, capable of surviving the harshest conditions. Puffins, like all auks, fish by pursuing their prey underwater, using their wings to propel themselves forwards.
Puffins by Dominic Clancy

Storm petrels are a tiny (sparrow-sized) totally pelagic species, which dip feed on the ocean surface. The name petrel is thought to derive from St Peter as their pattering on the surface of the sea is reminiscent of the Saint’s ability to walk on water. Storm Petrels are also known as “Mother Carey’s Chickens” after a supernatural figure representing the sea. Petrel’s tiny seemingly fragile appearance again belies their ability to survive at sea in the most extreme conditions. During the trip storm petrels were very much in evidence.
Manx Shearwater by Pat Veale


Sooty Shearwater by Andrew Malcolm
Shearwaters are a truly pelagic species undertaking huge annual migrations. The name derives from their flying method, whereby they appear to shear across the waves. Manx shearwaters breed in Ireland and migrate to waters off Brazil and Argentina in the winter. They were regular on the trip as were small numbers of sooty shearwaters. “Sooties” breed on southern ocean islands and disperse northwards along the western side of the Atlantic Ocean, moving east into our waters in July/August before returning south down the eastern side of the Atlantic to their remote breeding colonies in November/December.

Fulmar by Fran O'Connell
Almost always on view during the trip was the fulmar. Fulmars look superficially like gulls but their stiff winged flight and tube noses are obvious differences and more reminiscent of their close relatives albatrosses. The tube nose is an adaptation for excreting salt, which is picked up through their prey and seawater. Now a common breeding bird in Ireland this was not always the case. However with the demise of the human population on St. Kilda in Scotland and the subsequent reduction in hunting, fulmars quickly moved into all available breeding niches in Britain and Ireland.

Also in attendance on the pelagic trip was the kittiwake. This species is
Kittiwake by Dominic Clancy
named after its call. The kittiwake is a beautiful, dainty, small gull with jet black wing tips as if dipped in ink. This is a truly ocean going species which will never be encountered in dumps (as are other gulls) and only rarely on land. Dunmore East presents a good opportunity to see kittiwakes as they breed there on the cliffs in spring/summer.

Other species seen on the trip included several species of large gull, terns and a small pod of porpoises.
Martin Colfer regularly runs bird watching and whale watching trips from Youghal and is available on 087 265 7177.

Bottlenose Dolpin by Bernie Sheridan
Dungarvan was recently graced by a pod of bottlenose dolphins, comprising of ten to twelve individuals. The dolphins lingered for a few days, hunting between Ballinacourty Lighthouse and Ballyvoile. Bottlenose dolphins track their prey by the use of echo location. These dolphins are regular in Irish waters, with a resident population in the Shannon estuary and the most famous of all “Fungie” in Dingle harbour.