Showing posts with label Norway. Show all posts
Showing posts with label Norway. Show all posts

Saturday 5 July 2014

North Norway


I have recently returned from a trip to north Norway, well within the arctic circle, but still within the northern treeline. The higher hills are above the altitudinal treeline have long-lying snowbeds and where the snow has melted are covered with heath.The lower ground is largely covered with birch forest, only a few metres tall, with other areas covered with dwarf birch and willow scrub less than a metre tall.  The dominant ground cover in the heath and forest floor is lichen, often referred to collectively as reindeer lichen as that is the traditional food of the vast herds of semi-domestic reindeer that are held the there.  


The landscape as a whole is a complex mosaic of birch woodland, scrub, heath, mires and lakes. The winter snow is late to thaw and a cold north wind held the spring growth back this year.


The sky was often grey, but carried very little rain, most of it falling as showers, the clouds lit pink in the low midnight sun.


And midnight rainbows ran over the horizon.


Then as the wind turned to the south the air warmed and cleared, and the low sun cast soft backlight through the birches.


Although much of the lichen-heath has been heavily grazed by reindeer, there are still some carpets of reasonable size and depth, and they give a hint of the thick intricate growth of numerous species of lichen which should cover most of the dry ground.


The lichens are fragile, and crunch when trodden upon, it seems tragic to destroy so much art.


But the lichens are prolific and do grow back, to spread over twigs, leaves, branches and cast reindeer antlers.


Even a reindeer skull.

So when, or if ever, the reindeer herds are reduced enough, the lichens will return their former glory.


However, attractive as the woodlands and lichens are, I was there to study birds like this male Bar-tailed Godwit and other species of wader which come to these lands for a few months each year to raise their young. More of which I shall describe in further posts.

Saturday 30 June 2012

Willow Grouse

Male willow grouse

While in Norway I saw several willow grouse, always close to willow or birch scrub where they were feeding on the opening leaf buds and catkins. The male, above, has a redder colouring to his head and neck, and much more white on his body and wing feathers. Both sexes moult into almost pure white plumage in the winter, then back into a rusty brown feather colour in spring, the female doing so more quickly than the male as she has to be concealed on the nest and white feathers would betray her camouflage.

 Female willow grouse

The females were incubating eggs while we were there in late June, and they only come off to feed perhaps once a day. This bird, above, was feeding on the opening leaf buds of herbs and moss capsules. One nest I saw held twelve eggs, another held nine. These are both quite large clutches, typical of the species when their population is on a rise which these seemed to be as few birds have been seen in recent years. 

 Female on nest

The females incubate for more than three weeks, lying still and quiet under the cover of as in this case, dwarf birch, Betula nana. And they do so in all weather, such as rain when I took the photographs. The rain beading on her head and bill, and her breast feathers were matting with water. But underneath she would have been warm and dry, her plumage shedding the water as long as she was undisturbed -which she was when I left her.



Nordic Waders

Wood sandpiper

I am just returned from northern Norway where I was helping my brother, Skitts, with his long-term study of breeding waders. However, as in Scotland this spring, there have been almost incessant northerly winds there. This has led to a late thaw and emergence of plants and insects, and very few birds were breeding compared with the amount in years of more usual weather. 

Wood sandpiper, which was caught and ringed

In one mire where there would normally have been twenty-forty pairs of wood sandpipers breeding there was only one pair with chicks. In some mires there were none. And it was similar story with spotted redshank and reeve. Red-necked phalaropes were particularly scarce, probably because they are surface feeders and as there were very few mosquitoes emerging they had no food supply.

Ringing a wood sandpiper chick.

Of the two main study species, jack snipe did not seem to be breeding at all, although several birds were seen displaying. And less than a quarter of the expected number of  broad-billed sandpiper were breeding.

Adult, (1st year) broad-billed sandpiper caught and colour-ringed for identification in the field in subsequent years of study.

Unfortunately, a high proportion of clutches from the few that were laid were eaten by predators. This was probably mostly by hooded crows which were walking over the mies, in large flocks of twenty or more birds, feeding on emerging cranefly. They would have welcomed any eggs they came across in the process. We also saw several red foxes roaming the area, and they would have been likely predators too.