Skylark and Starling on the move

The north Norfolk coast at dawn is a magical place, particularly so in October. A favourite haunt at this time of the year is the narrow lane that runs from Kelling down to the sea. The thick hedgerows here have the potential to hold newly-arrived migrants and the occasional gaps in this berry-laden screen afford views over the surrounding fields. At the bottom of the lane things open up, a small expanse of water attracts waders and duck, while short cattle-grazed turf is great for wheatears, finches and buntings.

This morning looked promising, even though the wind had moved round and there had been clear skies overnight. The numbers of less common migrants reported along the coast over recent days, including dozens of Short-eared Owls, several Bluethroat and a Radde's Warbler, not to mention that Rufous-tailed Robin, were more than enough to give the local patch some added allure.

A tit flock feeding in the upper part of the lane held at least one Blackcap but there was no sign of of Chiffchaff or Goldcrest, both of which can be encountered here in numbers on some autumn days. What was particularly evident, however, was the large number of Starlings and Skylarks passing overhead. Small groups of Skylark peppered the soundscape with their calls, while the Starlings whooshed by on hundreds of noisy wings. Trailing off the back of one of the smaller Starling flocks were two Redwing.

The numbers of Chaffinches either passing overhead or dropping into the hedgerows also suggested a movement of some size, my highest count for the patch at any time of the year according to my BirdTrack records. There were also good numbers of Goldfinches, with fewer Greenfinch and no sign of the Linnet flock that had been engaging a fortnight ago.

While the pool held 28 Teal and 4 Snipe, it was the short-turf behind the sea wall that was busy with birds. Meadow Pipits and Pied Wagtails were here in reasonable numbers, feeding alongside Egyptian Geese and a solitary Little Egret that stalked the wetter ground. Also present were three Wheatears, still moving through from northern breeding grounds.

It did feel like things were on the moving, the crossover between summer (Wheatear and Blackcap) and winter (the arriving Starlings and Redwing), and this is one of the reasons why patch birding in autumn is so rewarding. The combination of your familiarity with the site, the sense of arrivals and departures, and the chance that something rare might be about to pop out of the bramble, make for exciting birdwatching.

39 species in total, not bad for a couple of hours on this particular patch.

Mike Toms

Fair Isle mini-blog: The long road north

Several BTO staff are spending a few days on Fair Isle, hoping that the weather sends some interesting migrants their way.

Most of our first day was spent in the car, leaving Norfolk and 4.15am and arriving on Shetland at 3.00pm. That doesn't mean we didn't see any birds though. Soon after first light it became apparent that there was a major migration event unravelling. Flocks of Redwings were a constant feature from South Yorkshire to the Scottish border, along with smaller numbers of Fieldfares.

Once on Shetland we went in search of a Buff-bellied Pipit, a stray from North America. This was partly successful, in as much as a third of the party saw the bird (John Marchant and Paul Stancliffe).


The field that the bird was in, eventually, was also a magnet  for migrants. 12 Swallows hawked over it, four Bramblings fed with the local Twite, a Whinchat sat on the fencewire, 25 Redwings joined the 10 or so migrant Blackbirds, and 2 Goldcrests fed in the adjacent ditch, sharing it with 3 Jack Snipe. And then it got dark

Tomorrow we leave for Fair Isle, weather willing. There is a strong southerly wind at the moment and it is around 9 degrees.

Paul Stancliffe

Here come the nomads

Over the last few days we have seen an arrival of Short-eared Owls at many East Coast sites, suggesting these are birds arriving from elsewhere in Europe. We receive a substantial influx of Short-eared Owls most autumns, with numbers increasing from August through to November. Information gleaned from ringed individuals suggests that many of these birds will be from Finland, Norway, Sweden and the Low Countries. Interestingly, the BTO ringing database also holds records of one from Iceland and one to the Faeroes, highlighting the wider origins of some birds.

Wintering Short-eared Owl, by Amy Lewis

Short-eared Owls have a reputation for being wanderers, avian nomads that seek out the opportunities offered by prey populations whose numbers can change dramatically from one year to the next. This nomadic behaviour is not restricted to the autumn and winter but can also be seen in breeding birds. The numbers breeding on favoured moorland sites across northern Britain may vary considerably between years as the birds respond to the availability of small mammal prey, particularly Field (or Short-tailed) Voles.

Birds that breed on our moorland will move to lower ground come autumn, favouring downland, rough grazing land and coastal marshes, where they may mix with individuals that have arrived from further afield. Some of our breeding Short-eared Owls will themselves make a sea-crossing, choosing to winter in France and Spain, again highlighting the fluid nature of this wandering owl.

Warbler watcher’s week

Sedge Warbler migration is at its peak; large numbers of this intricately-marked warbler are passing through watchpoints on the south coast right now. This was illustrated perfectly at a bird ringing site on the Pett Level in East Sussex this weekend - a team from BTO joined the regular ringers to help get a handle on the huge volume of birds leaving the country at the moment and of more than 2,000 birds caught and ringed, about 25% were Sedge Warblers. The Birdtrack reporting rate shows perfectly how this species is flooding out of the UK.


Other species that were well represented included Willow Warbler and Whitethroat, whilst Sand Martins - our earliest departing member of the swallow family - far outnumbered Swallows at the evening roosts.

Common Terns have become more obvious offshore as they make their way south in migrating flocks. 2,530 were counted past Spurn Point on 16 August. Flocks of migrating terns flying just above the waves determinedly heading south provide one of the greatest spectacles of autumn migration. However, this week the Terns at Spurn were been eclipsed by Swallows- 7,500 were counted heading south over there on the same day. Over the next few weeks the number of these two species should increase as more and more begin their migrations.



The first juvenile cuckoos are also beginning to appear at coastal watchpoints. It is interesting to think that some of these could be the youngsters of the BTO satellite-tagged cuckoos that are being followed to their wintering grounds, which are already south of the Sahara.

Question of the week - What triggers migration?

It is largely recognised that there are two types of migration. Obligate; controlled by genetics, and facultative; controlled by external factors such as local weather conditions. For birds such as Swallows, terns and cuckoos, it is obligate migration that we are interested in.

Change in day length is an important factor in the timing of migration for obligate migrants, and coupled with genetic influence, can give greater year-to-year consistency in the timing of migration in individual species. For example, British Swifts largely tend to leave the country during the first week of August.