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Text of the page (random words):
atchers can be a key part of the work the skerries helipad photo by rachel taylor the skerries are a group of rocky islands in the irish sea near holyhead on anglesey owned by trinity house the significant seabird colonies are managed protected and monitored by rspb the arctic tern colony is the largest in the uk with 3 816 pairs in 2016 along with 290 pairs of common terns and an increasing probability of breeding attempts by roseate tern in 2018 fledging two chicks for the first time in decades in a normal year the terns arrive early in may with hatching starting at the beginning of june and the first chicks fledging in early july leg flagged arctic tern on the skerries image by rachel taylor since 2013 rspb has supported local ringers steve dodd and rachel taylor in running a set of small demographic projects in the colonies on skerries a sample of 500 arctic tern chicks are ringed each year and retrapping adults for survival ras studies run on both arctic and common terns the ras studies use individually coded leg flags to identify individuals there are several good reasons why rspb supported our work but one major justification was an interest in understanding colony dynamics in terns colonial seabirds in general have something of a dilemma in choosing a nest site colonies have advantages for example in recognising and exploiting local resources like safe sites for nests and good feeding sites individual nests run a lower risk of loss to predators because there are many nests to choose from and many eyes watching for those predators but they also create problems such as risk of disease transmission increased competition for food resources and vulnerability to local resource changes random disturbance events and becoming a target for predators major colony collapses may be a result of several pressures operating at once but terns are long lived several studies have identified the linked nature of adjacent colonies with large colonies exporting chicks to smaller sites and local populations remaining broadly stable despite rises and falls in breeding numbers at individual sites site abandonment tends to be more or less temporary and if the pressure that caused the birds to leave is managed or removed entirely the birds return leg flagged common tern cj in the skerries photo by rachel taylor when we set up the adult survival projects on the skerries we knew that most large colonies north of anglesey had at some time in the past experienced significant population declines or abandonment one of the most dramatic being the abandonment of the shotton steelworks common tern colony on the dee in 2009 the reasons for that collapse and the work underpinning the colony s subsequent recovery provide a fascinating example of the complex issues that long lived seabirds experience but we wanted to know some very specific things about the birds experience of a colony collapse event of course at the time the skerries colony was going from strength to strength and we expected that to continue but the national pattern was clear we could learn from adult survival data in a healthy colony but would also be prepared with a good baseline in the event of something changing for the skerries we had a specific set of in the event questions firstly since arctic terns are more site faithful than common or sandwich terns would a colony breaking event cause them to simply take a year off and then return the following year or would they immediately try somewhere else secondly having attempted and possibly been successful elsewhere would they return to the skerries in subsequent years or emigrate for life thirdly terns are reluctant to change their breeding site for very good reasons we wanted to understand the survival implications of the birds experiencing such a major upheaval as a colony collapse event survival studies take time and like dispersal studies depend on birds being individually recognisable without causing data skewing and inappropriate disturbance hence the common use of colour marking in ras lots of terns photo by rachel taylor the collapse of the skerries tern colonies this year is very sad but certainly isn t the end of the story there is good evidence that such a collapse will be temporary if as already seems likely the cause is identified and can be managed but more than that the skerries is a huge opportunity to learn about collapse events and about how individual terns respond and recover from them birders are already beginning to look for birds from the skerries marked with coded orange arctic tern or yellow common tern leg flags in particular the nearest colony on anglesey caemlyn has already seen an influx of arctic tern and the wardens are on the lookout for marked adults if you live or bird around the coasts of nw england north and mid wales or the isle of man or the irish sea coasts of the republic of ireland and northern ireland and if government restrictions allow please keep your eyes peeled and your bins poised and help us find the scientific silver lining inside the dark cloud of this year s skerries colony abandonment flag sightings to sg dodd yahoo com posted by lee barber at 12 05 0 comments email this blogthis share to x share to facebook share to pinterest labels arctic tern colour ringing common tern katharine bowgen rachel taylor skerries steve dodd the skerries 15 april 2020 the joy of garden nesting bto scotland s steve willis and bto northern ireland s stephen hewitt share their passion for monitoring garden nests and pass on some tips for how to get involved in this rewarding activity note if you are new to nest monitoring and want to record the progress of a few garden nests and nest boxes then nesting neighbours is the ideal interface it s simple to use and provides some really nice feedback on how other people s nests are doing too if you already use demography online as a ringer or nest record scheme participant then please continue to do so signing up to nrs if necessary the data from both systems go into the same underlying database and contribute to the statistics these schemes collect information on breeding success which helps us to understand the impacts of factors such as climate change and food availability on the number of young produced and the influence this then has on population trends participation is therefore very valuable as well as rewarding scientific studies have shown that as long as observers are careful and follow the bto s code of conduct making several visits to a nest to record the contents does not increase the probability of it failing it is completely legal to look inside a nest in england scotland and wales as long as you do not touch the contents and the species is not included on the list of scarce protected birds if like stephen you are in northern ireland or the republic of ireland you must apply for a licence prior to monitoring a nest of any species a separate licence is needed for photographing nests steve since the covid 19 lockdown like many people i ve been working from home my home office has a view out over the garden and i started noticing a female blackbird regularly visiting a particular evergreen shrub in the shade of a big holly tree it looked like she was building a nest i was aware of the nesting neighbours project and i wondered if i should give it a go though i must admit i hadn t done any nest monitoring before a chat with stephen who is an old hand and infectiously enthusiastic had me sold i had a read of the guidance pages and then went out to take a look the blackbird nest is in the coniferous shrub in the centre of the picture steve willis the nest was about one metre off the ground in a dense coniferous shrub so to look down into it i needed to very carefully move a few small branches apart peering inside i could see four beautiful speckled blue eggs it felt like such a wonderful privilege to be getting such a close view the female was off the nest at the time but i could hear the male singing somewhere nearby i beat a hasty retreat and watched from the kitchen window reassuringly it wasn t long before the female returned i visited the nest again a few days ago five days after my first visit and this time the female was sitting tight obviously incubating i think i m getting the hang of it i m under strict orders from stephen to follow the breeding attempt through whatever happens nests fail naturally for a number of reasons including predation and this is a regular occurrence with early thrush nests information from all breeding attempts is important not only the ones that succeed these blackbird eggs are a beautiful speckled blue but the colours can vary a bit steve willis when i m not doing various bird related things i enjoy a bit of woodwork and although i already had one nest box up in the garden i was inspired to make another out of some odds and ends here s a short video of the build process i might have put it up too late for anything to use it this year but fingers crossed if you want to have a go at building your own the plans are here stephen steve s right i am an old hand though not that old steve i first got into nest recording about eight years ago when encouraged by the then bto northern ireland officer shane wolsey and carl barimore from bto hq in a normal year i make regular visits to local patches in county armagh i absolutely love the process of searching for nests tuning in to the subtleties of bird behaviour song and call and getting to know the types of places that different species favour every nest i find gives me a wee buzz and following a breeding attempt through to fledging is very satisfying of course it doesn t have to be tricky at all if you have tits nesting in your bird box then nest finding is very straightforward here s a song thrush nest that i found note the hard dry inner lining like chipboard the holly berries round the rim are a bit unusual but apparently thrushes do occasionally decorate their nests stephen hewitt i d really encourage anyone who is considering garden nesting to give it a go it is hugely enjoyable absolutely but remember you ll also be collecting priceless information by recording the number of eggs fledglings and the outcome of nesting attempts volunteers are helping to reveal how our wild birds are doing every year many people start with a box and monitoring these is straightforward if you have a nest box camera installed or if the lid can be removed just check the box every five days or so easy before opening the box give it a gentle tap to let anything inside know that you are coming and then lift the lid just enough to see inside make a note of what you can see but take care never to touch eggs or chicks if there is a bird incubating then simply replace the lid and come back later to count the contents there are guidance notes here which give more detail if you enjoy nest monitoring and i m sure you will i d really encourage you to graduate to open nests too they are easier to find than you might imagine you can sit quietly and watch the adults like steve did or carefully search trees bushes and ivy there are few things that compare with the thrill of pinpointing an open nest peering into a dunnock s nest at five recently laid bright blue eggs takes some beating and provides vital information to help us understand how well this amber listed species is breeding a dunnock nest found by stephen near lurgan co armagh in 2018 nest monitoring is a fantastic way to learn about bird behaviour too you ll get to know the characteristics of each species and you might notice differences between pairs a particular male might have a characteristic song with repeated phrases or mimicry some males sing throughout the breeding attempt even whilst carrying food male blackcaps sometimes sing quietly while incubating whereas other males go very quiet once paired female behaviour can be interesting too they sometimes seem agitated when their eggs are about to hatch giving repeated alarm calls even when seemingly undisturbed nesting also throws up interesting questions for instance why do female song and mistle thrushes sometimes decorate the rims of their nests with berries and petals see photo above and why would a female whitethroat choose one of the decorated nests built by her mate only to remove the decoration before laying typically i monitor around 100 nests each year my record is 117 and for that reason i submit my data via the demography online interface if you re monitoring more than about twenty nests per year then this is probably the way to go but for a smaller number of nests the nesting neighbours platform is ideal so there you have it garden nest monitoring is really rewarding hugely valuable and you ll learn a lot about familiar birds through doing it go on give it a go posted by lee barber at 07 27 0 comments email this blogthis share to x share to facebook share to pinterest labels carl barimore code of conduct demography online demon nest record nest record scheme nesting neighbours shane wolsey stephen hewitt steve willis 20 february 2020 it s national nest box week it is national nest box week nnbw this week and our wild birds are starting to think about the coming breeding season this year is the 20th year of nnbw which aims to encourage everyone to put up nest boxes for birds and to raise awareness of their needs ahead of the breeding season while our migratory birds are preparing for their journeys back to britain and ireland for the summer lots of our resident species are already singing to affirm their territory finding a mate and choosing a nest site tiny blue tit chicks thinking food has just arrived photo by lee barber around half of all households feed birds so while food can often be plentiful the lack of suitable nesting sites can be a problem putting up a nest box can therefore provide a welcome boost for some species blue and great tit are the most frequent users of nest boxes but there is an amazing variety of species that use boxes and by providing a suitable box you could encourage them to set up home in your garden house sparrow nuthatch starling swift stock dove tawny owl and kestrel are among the species that need suitable nesting sites and providing a box could really help them and some of our other declining red or amber listed species for more information on what boxes are suitable for which species click here tawny owl chicks waiting for the next delivery of food photo by lee barber when buying a nest box one of the most important features that i look for is a removable lid this aids cleaning the box at the end of the breeding season cleaning can be done between 1st september 31st january but most importantly it means that the contents of the nest can be recorded bto volunteer nest recorders around britain and ireland record the number of eggs fledglings and the outcome of nesting attempts providing a wealth of information on how our wild birds are 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