Launch of MigrantWatch 2019/20

1 Nov

The MigrantWatch 2019/20 has been officially launched with an event held at the British Council, Colombo. An exhibition on migratory birds was setup at the British Council Library and the main lecture was delivered by Prof.Sarath Kotagama which was followed by panel discussion including Dr.Sampath Senevirathne, Gayomini and Malaka Rodrigo.

The director of the British Council Sri Lanka doing the welcome speech

Prof.Sarath Kotagama delivering the lecture on Migratory Birds

 

MigrantWatch 2019/20 launched

27 Oct

The MigrantWatch 2019/20 has been officially launched with an event held at the British Council, Colombo. An exhibition on migratory birds was setup at the British Council Library and the main lecture was delivered by Prof.Sarath Kotagama which was followed by panel discussion including Dr.Sampath Senevirathne, Gayomini and Malaka Rodrigo.

Dragonfly Migration 2019 : Have you observed increase of Dragonflies..?

27 Oct
#Dragonfly_Migration: Eight years ago on 2011, a mass movement of dragonflies were recorded on west coast near Dehiwala, Wellawatte, Bambalapitiya etc. This was first observed by Nashath Hafi on 20th of October 2011 and Nashath who lives in Bambalapitiya now observed an increase of Dragonfly numbers around his area since yesterday. Remember yesterday is also the 20th of October and start getting another series of rains – which may mean onset of monsoon winds that could trigger this migration.
  • So if you observe any mass movement / sudden increase of dragonflies – please report.
  • If you know someone living near the coast (those part of fishing community would be the ideal to check this), please ask them observation of possible mass movement of dragonflies.

Globe skimmer dragonfly

Please read following articles for more info about this phenomena…

Expect thousands of ‘dual citizens’ at election time

27 Oct

While the dual citizenship of presidential election candidates has been a hotly-debated topic in the political arena, it is expected that thousands of other “dual citizens” will be in Sri Lanka by election day in November.

Exhausted Indian Pitta found fallen on 28.10.2018. Pix by Sarath N. Senanayake

Some of them are eligible for European passports while others come from Asian countries.

None, however, will come through immigration channels, and they do not care at all about the political drama in Sri Lanka.

These dual citizens are migratory birds that come here annually from northern countries at this time.

About 2,500 of the 10,000 world bird species engage in long-distance migration as a response to changing weather and the availability of food, spending their life in different countries.

Nearly half – 245 species – of the 508 bird species recorded in Sri Lanka are migratory and generally begin arriving in late August, staying on here until about March-April next year before returning to their country of origin to breed.

“As the main steps of the migratory routine are predictable and move in a rhythm, bird migration can be considered to be like a ballet dance – in fact, bird migration could be called the greatest dance in the world,” ornithology expert Dr. Sampath Seneviratne told the Wildlife and Nature Protection Society this week.

A helping hand for the Indian Pitta

“Birds that breed in European countries such as Russia, and in Asian countries such as China, Mongolia, Afghanistan and India, migrate to Sri Lanka.

“We need more research on migratory patterns as there is a lot to unravel,” said Dr. Seneviratne, President of the Field Ornithology Group of Sri Lanka (FOGSL) and a senior lecturer at the University of Colombo.

Historically, migrating birds are believed to have arrived in Sri Lanka along three main routes to Sri Lanka, using designated pathways. This view was based on observations carried out in colonial times.

“It is time to have more advanced research to link the dots with the use of new technologies,” said Dr. Seneviratne.

The traditional method of researching migration is carried out with the use of rings fixed on birds’ legs.

If a bird with a ring fixed by ornithologists in one country is found in another country it acts as proof of presence of the bird at two locations.
Science has led to improvements in tracking. The new trend is “geo-tagging”, in which scientists place a satellite tag on a bird. The tag emits signals that pinpoint the bird’s location.

Dr. Seneviratne said satellite tracking by India has led to findings that contradict traditional knowledge of the main routes used by birds migrating to Sri Lanka.

“Geo-tagging is expensive, so we can’t do it in Sri Lanka at this point,” he added.

A national bird-ringing program carried out by FOGSL and the Department of Wildlife Conservation (DWC) under Professor Sarath Kotagama has revealed interesting patterns such as the same birds migrating annually to the same site – sometimes to the same plots – in a pattern used by their ancestors.

“Some people believe the ringing process puts birds in danger. But this is a myth and it is perfectly safe, and I’m bit disappointed when I hear such allegations,” the FOGSL President said.

“We need science, and without understanding birds, their behaviour and their migratory patterns it is not possible to conserve them.”

About an hour later the bird had revived

 

 

 

 

 

 

 

 

 

 

http://www.sundaytimes.lk/191020/news/expect-thousands-of-dual-citizens-at-election-time-374099.html published on SUndayTimes on 20.10.2019

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MigrantWatch 2019/20 launch at British Council

27 Oct

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The World Migratory Bird Day

27 Oct

Out of the blue, a visitor is blown in by the monsoon

27 Oct

An unusually large bird found this week on Muthu Panthiya island in Chilaw drew crowds as it had never been observed on land. Stricken by curiosity, the villagers caught the bird and handed over to the Anawilndawa wildlife office.

Surprise visitor: The Frigatebird. Pic by Hiran Priyankara

The bird, blackish with white underparts, had a very long, hooked beak and a wide wingspan and looked clumsy on the land, unable to perch properly. It was later identified as a frigatebird – a large seabird inhabiting tropical and subtropical ocean regions.

Frigatebirds are occasionally observed flying on the sky, but it is very rare to find one on land in Sri Lanka.

Named after a fast warship, frigate birds are fast on the wing, sometimes attacking other birds to steal their fish catch and snatching baby birds from other seabird colonies.

There are five species, and experts believe this bird could be a Christmas Island frigatebird (Fregata andrewsi) or great frigatebird (Fregata minor).

Seabird expert Gary Allport of BirdLife International identified the bird in Chilaw through photographs as a female greater frigatebird aged two or three years.

“Greater frigatebirds are common in the Maldives and the strong monsoon winds could have assisted the bird’s passage from the Maldives to Sri Lanka [about 600km],” seabird expert Rex I. De Silva said.

“The presence of a Christmas Island frigatebird would be more difficult to explain as the bird would have to battle strong monsoon headwinds for approximately 3,600km to get here”.

Mr. De Silva said frigatebirds are notoriously difficult to identify as in a particular growth phase one species could resemble another in a different phase.

Frigatebirds have long and pointed wings that can span up to 2.3metres (7.5 feet). This is the ratio of largest wing area to body weight than any other bird in the world.

The birds feed on fish picked from the ocean’s surface while in flight.

The recent strong monsoon winds and weather might have helped bring the frigatebird to Sri Lanka’s western shores. Just a day prior to its discovery in Chilaw, Mr. De Silva, on his social media platform, “Seabird Watch (Sri Lanka)”, posted a note that the bad weather should be ideal for observing the seabirds as this is also the period of a mass seabird migration.

“August-September is in fact the best time to observe the great mass migration of seabirds. During the peak in September as many as 3,000-4,000 bridled terns (Sterna anaethetus) fly southwards within sight of shore in one hour,” states Mr. De Silva who has studied this fascinating phenomenon over many years.

Many seabirds take part in long annual migrations, crossing the equator after the breeding season. Nearly 50 seabird species have been recorded on the west coast of Sri Lanka.

One of the main studies conducted by Seabird Watch (Sri Lanka), a 13-year study of the mass migration of bridled terns off the west coast, is the most comprehensives and long-lasting study on seabirds in the northern Indian Ocean.

BirdLife International, the umbrella organisation of world’s bird conservation organisations states seabirds have become the world’s most threatened bird group, recording steep declines in populations almost everywhere.

There are only 2,400-4,800 mature Christmas Island frigatebirds thought to remain in the wild according to the International Union for the Conservation of Nature.

http://www.sundaytimes.lk/190818/news/out-of-the-blue-a-visitor-is-blown-in-by-the-monsoon-363649.html Published on SundayTimes 18.08.2019

Spoon-billed Sandpiper found in Sri Lanka!

25 Jun

The last record of a sighting in Sri Lanka was 40 years ago in 1978 and for many years, birdwatchers in the country have been on the look-out for it here. http://www.sundaytimes.lk/180624/news/spoon-billed-sandpiper-found-in-sri-lanka-299443.html

The Spoon-billed Sandpiper at Vankalai Sanctuary. Pic by Ravi Darshana

As afternoon was slowly fading into evening, around 5 p.m. on June 6, an Executive in a finance company, Ravi Darshana, was returning home after work in Mannar, through the Vankalai Sanctuary when he saw an interesting sight.

At a water body, just 25 metres from the road, he saw a flock of 250-300 ‘loitering’ shorebirds. This was not the time of year for the sanctuary to hold multitudes of migrant waterbirds, for they had left two months before, most returning home far to the north of Sri Lanka, from where they had flown here to avoid the winter.

However, Ravi, a Ceylon Bird Club (CBC) member, could make out a mix of mainly Kentish Plovers and Lesser Sand (Mongolian) Plovers with a few Curlew Sandpipers and Little Stints. The latter three being the most numerous of the shorebird species that visit Sri Lanka and the first being quite common.

Two of the birds were feeding together separately from the rest and Ravi, focusing his binoculars on them, identified one as a Little Stint. The other, he noted, was of similar plumage but slightly bulkier in appearance……..and then he saw the unmistakable bill.

It was a Spoon-billed Sandpiper!

Ravi had spotted the little shorebird with the strikingly shaped bill, Calidris pygmaea, rated as ‘Critically Endangered’ by the International Union for Conservation of Nature (IUCN).

The Sunday Times understands that the Spoon-billed Sandpiper has attracted much attention towards its protection in recent times. Seen in South India until 1996, there had been no records since then in that country, until April this year when it was seen in Bengal, adjacent to Bangladesh.

While the IUCN states that the Spoon-billed Sandpipers are “an extremely small population that is undergoing an extremely rapid population reduction”, the Cornell Lab of Ornithology points out that there could be “as few as 100 breeding pairs remaining”.

And on June 6, Ravi had seen this elusive shorebird, for whom birdwatchers in Sri Lanka have been on the alert because of the value to ornithology in knowing if its range had extended again and as a “prize” sighting.

Ravi, had joined the CBC a little more than a year ago, becoming an exceptional field ornithologist, recording one species new to the country and several which are very rare, in this brief time.

Spoon-billed Sandpipers breed in the eastern-most end of Asia and annually migrate along the shore of the continent to South-East Asia and the Bay of Bengal. Their population was naturally small to begin with and has declined dangerously. This is believed to be due to the loss of wetlands in its migratory and wintering range, caused by human activity, according to the CBC.

This has resulted in the setting up of a ‘Spoon-billed Sandpiper Task Force’ comprising numerous scientists and conservationists of many countries.

Explaining how Ravi had seen a flock of shorebirds, when most had left, the CBC said that young shorebirds which migrate for the first time, having left the breeding grounds a few months after their birth, do not return there at the end of their first winter. The great majority of them fly back part of the way to different summering grounds. A few of them ‘over-summer’ or ‘loiter’ on in the wintering grounds through the summer and stay the following winter as well. With some species this may happen a second time. After the next winter, they return home to breed. Until this time they also retain their less colourful winter plumage, which blends with their southerly surroundings.

Sri Lanka lies at the end of the great Central-South Asia ‘flyway’, one of the world’s major migration routes for birds which annually move south from the northern winter. For the hundreds of thousands of birds which winter in the island, there are two entry-and-exit pathways: The Jaffna Peninsula and Mannar, partly via the Adam’s Bridge islands. Most of the waterbirds remain in the north throughout the winter, staying within either region or flying between them.

It is possible that among these multitudes of birds, Spoon-billed Sandpipers arrived in Sri Lanka in any or all of the past years and were missed. The present bird was more conspicuous because it stayed on after the flocks of other shorebirds had left, the CBC said, adding that “now we know that the species still does migrate as far as its natural south-western limit, Sri Lanka, as it did before its population declined”.

The CBC is in contact with the Spoon-billed Sandpiper Task Force and Wetlands International regarding the find and the follow-up to it.

Spoon-billed Sandpiper at a glance
The Spoon-billed Sandpiper has a naturally limited breeding range on the Chukotsk peninsula and southwards to the isthmus of the Kamchatka peninsula, in north-eastern Russia…It migrates down the western Pacific coast through Russia, Japan, North Korea, South Korea, mainland China, Hong Kong (China), Taiwan (China) and Vietnam, to its main wintering grounds in southern China, Vietnam, Thailand, Bangladesh and Myanmar, according to the IUCN.Referring to its habitat and ecology, the IUCN states that it has a very specialised breeding habitat, using only lagoon spits with crowberry-lichen vegetation or dwarf birch and willow sedges, together with adjacent estuary or mudflat habitats that are used as feeding sites by adults during nesting. The species has never been recorded breeding further than 5 km (and exceptionally once, 7 km) from the seashore.

 

Protecting migrant birds
Congratulating Ravi on the “wonderful” find of the Spoon-billed Sandpiper, the Ceylon Bird Club (CBC) Chairman Dr. Pathmanath Samaraweera says that the CBC kept the news limited for a short period of time to allow the study of the bird, as there is a present tendency for “photographic trophy hunters” to chase after rare birds, disturbing them.“The CBC is happy that Vankalai Sanctuary and Veditalativu Nature Reserve (NR) were declared as protected following up on the data provided by the club. We thank the Department of Wildlife Conservation (DWC) for this and for further conservation measures even with limited resources in personnel,” he says, adding that the declaration was primarily to protect migrant birds. “If any ‘ringing’ is done we urge the DWC to observe or monitor and enforce, the stringent international rules which apply, to prevent any harm to them.”

Referring to the wind farm in Mannar, Dr. Samaraweera says that they are disappointed that in spite of the extensive data and analysis supplied by the CBC highlighting the importance of the migratory pathway across which the wind turbines are to be constructed, the Ceylon Electricity Board and the Asian Development Bank chose to accept reports that stated that there was no significant collision threat to migratory birds from the wind turbines.

Vankalai Sanctuary, a little over 4,800 hectares, and Veditalativu NR, even larger, together form an unbroken extent of land, one of the richest and most important waterbird areas in the world. They were declared protected areas in 2008 and 2016 respectively and Vankalai was named a Ramsar Site in 2010, all on data provided by the CBC. A CBC team carrying out its annual waterbird census at Veditalativu Lagoon in 2010, found a million shorebirds and in the Vankalai Sanctuary, it recorded half a million shorebirds in 2016 and 2018, and more than 100,000 waterbirds on several occasions.

“There has been political pressure to de-gazette part of the Veditalativu NR for an aquaculture farm! The two protected areas have been encroached on already with political support or even initiative. These are not the only instances,” the CBC adds.

Possible seasonal movement/migration of cattle egrets

25 Jun

Cattle Egret is a common bird – but can you spot this bird in your area these days..? The photos show ground of University of Colombo on the morning of 26th of May 2018. There were 55 Cattle Egrets foraging on the wet ground with number of them in full breeding plumage. The birds started gathering few days prior, where about 35 cattle egrets were counted on University Grounds on 22nd of May. On 22nd of May; Prof.Kotagama pointed out this could be a congregation before a seasonal movement/ migration and when I visited university of Colombo on 4th of June – not a single Cattle Egret could be spotted.

Elsewhere (in India), it researchers observed Cattle Egrets show seasonal movements during their breeding season along with the monsoon – getting disappear in June and emerge back in September. So our cattle egrets too could be following a similar pattern without our notice.

So do observe cattle egrets and report cattle egret sightings. If you remember an area where cattle egrets were present earlier, please make a visit this week to the location to find out whether they are still there. You can send observations to gardenbirdwatch.srilanka@gmail.com.

Following is an article about the phenomena appeared on Vidusara 20.06.2018

A cattle egret in breeding plumage (c) Evarts Evarts

දිගු කකුල් සහිත, මාළුන් අල්ලා ගැනීමට ම පිහිටි උල් දිගු හොටක් සහිත, බොහෝ විට ජලාශ්‍රිතව දැකගත හැකි සුදෝ සුදු කුරුල්ලන් ‘කෝකුන්’ සේ පොදුවේ හැදින්වීමට අප පුරුදු වී සිටින්නෙමු. ශ්‍රී ලංකාවේ දී අප දකින සුදු පැහැති කොකුන් සියල්ලන් ම පාහේ එක් වර්ගයක් යැයි සිතුවත්, සැබහින් නම් එවන් කොකුන් වර්ග 4ක් සිටි. මහ කොකා (Great Egret), මැදි කොකා (Intermediate Egret), පුංචි අනු-කොකා (Little Egret) සහ ගව කොකා (Cattle Egret) මේ කොකුන් වර්ග වේ.

මේ අතරින්, පළමු කොකුන් තුන් වර්ගයම ජලාශ්‍රිත ව වාර්තා වුවත්, ගව කොකා නම්, බොහෝ තැන් වල වාසය කිරීමේ කලාව හොදින් ප්‍රගුණ කරගත් කුරුල්ලෙකි. සෙසු කොකුන්ට සාපේක්ෂව ගව කොකුන්ගේ ගෙල කෙටි වන අතර පැහැදිලිව දැකිය හැකි ත්‍රිකෝණාකාර හිසක් පිහිටා තිබේ.

ගෙරි-කොකා නැතහොත් ගව කොකා ලෙසද හදුන්වන කුඩා ප්‍රමාණයේ කොකෙකු වූ Cattle Egret, වචනයෙන් කියවෙන ලෙසම බොහොවිට ගවයන් ආසන්නයේ බොහෝවිට දැක ගත හැකිවේ. ගවයන් ගේ චලනයේ දී සහ ගමනේ දී කලබල වී ඉවත් වන ගෙම්බන්, තනකොලපෙත්තන් වැනි කෘමින් ද පණුවන් ද ආහාරයට ගන්න අතර ගවයන් ගේ ඇගේ වසන  මැස්සන්, අටමස්සන්, කිණිතුල්ලන් අල්ලා ගන්නා නිසා, ගවයන් ට ද මේ කුරුල්ලාගේ ගැවසීම ප්‍රයෝජනවත් වේ.

Cattle egrets with cattle (c) Audubon Society

ගවයන් ගැවසෙන ස්ථාන වල බහුලව සිටියත්, ගව කොකා පරිසරයට හොඳින් අනුවර්තනය වීමට හැකියාව පෙන්න්වන්නේ, ගවයන් නොමැති නගරාශ්‍රිත ව ද හොඳින් දිවි ගෙවීමට ඇති හැකියාවයි. විවිධ ප්‍රදේශ වල පැතිර සිටින ගව කොකා, විශේෂයෙන්ම නගරාශ්‍රිතව කුණු බැහැර කරන ‘කුණු කඳු’ ආශ්‍රිතව ව සුලබ දසුනකි.

සාමාන්‍ය කාල වල දී සම්පුර්ණයෙන් සුදු පැහැති වන ගව කොකා සුවැදී සමයේ දී හිස, ගෙල සහ ඉහල පිට කය රන්වන් පැහැයක් ගනී. බොහෝ විට තෝරාගත් ගසක සමුහයක් ලෙස කැදලි තනයි. මෙම ගස බොහෝ විට දිය පාරක් හෝ වැවක් අසල තිබෙන බව අද්යයනය කර තිබේ.

සාමාන්‍යයෙන් සුවැදී සාමය මැයි සිට ඔක්තෝබරය දක්වා දිවෙන බව සදහන් වේ. එහෙත් මේ පිළිබද නිසි අධ්‍යයනයක් අවශ්‍ය බව පෙන්වා දෙන්නේ, සුවැදී සමය පාදක කරගත් සංචරණයක් මොවුන්ගේ දක්නට තිබෙන බැවිනි.

උදාහරණයක් ලෙස ගතහොත්, කොළඹ ප්‍රදේශයේ දී මැයි මස අගදී පමණ මේ කුරුල්ලන් එක් වර අතුරුදහන් වන අතර, ඔක්තෝබරය පමණ වන විට නැවතත් දක්නට ලැබේ. ඉන්දියාවේ කල අධ්‍යයනයකට අනුව, නිරිත දිග මෝසම් වැස්සත් සමග එම ප්‍රදේශයෙන් අතුරුදහන් වන ගව කොකුන්, නැවතත් ඔක්තෝබරයේ දී එම ප්‍රදේශයට පැමිණේ. මිට අමතරව කාලයකදී නිහැරීමක් (Migration) ද, සමරහ ගව කොකා ගහණ විසින් සිදු කරන බව අනුමාන කෙරේ.

කොළඹ ප්‍රදේශයේ දී සිදුකල නිරික්ෂනයන්ගෙන් ද පැහැදිලි වුයේ, ගව කොකුන් කාලයක දී ප්‍රදේශයේ දී දැකගත් නොහැකි බවය. මෙහි දැක්වෙන කොළඹ විශ්ව විද්‍යාලයේ පිට්ටනියේ දී මැයි 26වැනිදා උදෑසන ගත ජායාරූපයකි. මෙහි දැක්වෙන පරිදි ගව කොකුන් 55ක් පමණ ගණනය කිරීමට හැකිවිය. මිට දින කිහිපයකට පෙර සිටම, විශ්ව විද්‍යාලයීය පිට්ටනියට මේ කුරුල්ලන් එකතු වීම ඇරඹු බව, එම විශ්ව විද්‍යාලයේම මහාචාර්ය සරත් කොටගම මෙම සිදුවීම හැදින්වුයේ, මෙය මේ කුරුල්ලන් වෙනත් ස්ථානයක ට යෑමට ප්‍රථම සිදුකරන එක්රැස් විමක් විය හැකි බවය. කියූ පරිද්දෙන් ම ඊලග සතිය වනවිට, පිට්ටනියේ එකුදු ගව කොකෙකු හෝ වාර්තා නොවිය.

ඔක්තෝබරයේ දී මේ කුරුල්ලන් නැවත දක්නට ලැබෙන බවත්, මෙය සුවැදී සාමය පාදක කොටගත් ගමනක් ලෙස සිතිය හැකි බවත් මහාචාර්ය කොටගම අප වෙත පැවසිය. “ගෙරි කොකා ගොඩක් බහුල ව දැකගත හැකි කුරුල්ලෙකු නිසා, බොහෝ විට අපේ අවධානයට ලක් වෙන්නේ නෑ. ඒත් මේ දවස්වල ඔබේ ප්‍රදේශයේත් මේ කුරුල්ලා දැක ගන්න පුළුවන් ද කියල නිරීක්ෂණය කරන්න” යැයි මහාචාර්ය කොටගම ආරාධයනක් කළේය.

කුරුල්ලන් ගැවසෙන කුණු ගොඩක් වැනි තැනක් මේ කුරුල්ලන් නිරීක්ෂණයට හොද ස්ථානයකි. නැවතත්, මේ කුරුල්ලන් දක්නට ලැබෙන දිනය ද සටහන් කර ගැනීමෙන් මේ පොදු කුරුල්ලා ගේ හරිහැටි නොදත් විස්තර සොයා ගැනීමට ඔබටත් උදව් කිරීමට හැකි වනු ඇත. ඒ නිසා ඔබගේ නිරික්ෂණයන් gardenbirdwatch.srilanka@gmail.com වෙත යොමු කරන්න.

The aggregation of Cattle Egret on University Grounds on 26.05.2018

More than 700,000 migratory warblers over nine hours

7 Jun

There are good days birding, and then there are those spectacular days when you see hundeds of thousands of migrating warblers. Wait, you haven’t had one of those?

Well, earlier this week, six birders experienced exactly that, and their account, detailed in an absolutely bonkers eBird checklist, has the whole bird world abuzz. According to the report, early Monday morning the six birders arrived at the Tadoussac dunes, a popular birding destination in Quebec, Canada, hoping to see migrating warblers during their morning flight—a phenomenon that occurs when birds pushed off their typical migration pattern during the night reorient themselves at first light. With strong southwesterly winds the night before, the team was hopeful to see birds heading southward to correct their routes. Nine hours later, they ended up having a historic day.

For more visit link https://www.audubon.org/news/eBird-report-record-warbler-flight-Tadoussac-Canada