Thursday 29 September 2011

Woodswallows

Adult male white-browed woodswallow

I was helping to catch and band birds on a field study run by Richard Allen last weekend at the Weddin Mountains. The weather on Sunday was a bit windy for efficient mist-netting but we caught 108 birds, mostly on the Saturday.

The main birds of the trip were woodswallows. There was a flock of about 700 flying overhead most of Saturday, and they were coming down to feed on nectar from flowering Ironbark trees, then they came in to roost in the trees at dusk. The main species was white-browed, of which we caught 40, and there were also masked (2 caught) and dusky (1 caught).

A dusky woodswallow on the left and
a white-browed woodswallow on the right

Among the other birds we caught were a male and female sacred kingfisher,

Male sacred kingfisher

and a one of those wonderful kingfishers, a kookaburra.

Kookaburra

Tuesday 20 September 2011

Pardalotes

I was out catching and banding birds at the weekend helping Mark Clayton with his long-running study of birds in the Charcoal Tank Nature Reserve near West Wyalong in south-west New South Wales. This is a stand of woodland, a tiny remnant of what was once typical wooded plains in the area. The main trees are red ironbark which were flowering and attracting numerous honeyeaters and the little jewels of the woodland, pardalotes. There were two species: the spotted and the striated, and we caught both.  

Spotted pardalote - Pardalotus punctatus


This is an adult male, identifiable by his white-spotted black crown, bold white supercilium and bright yellow throat. The female has yellowish spots on her crown and less pronounced supercilium and throat colours. The young birds have a pale crown base colour and greyish back with very little scalloping of the back feather pattern.

The bright fire-red base to the tail  of the spotted and the bright yellow forehead of the striated are the most readily identifiable markings between the two species when seen briefly in the field. 

Striated pardalote - Pardalotus striatus, subspecies substriatus

This is an adult bird as it has a full white supercilium and streaked crown of white feathers on black. The sexes are identical. Young birds of the year have a faint yellowish supercilium and a pale buff-green freckled crown.

The broad white markings along the veins of the primaries are a feature of the subspecies which is the typical type of the wooded plains west of the Great divide in southern New South Wales.

Monday 5 September 2011

Possums


I made a stock check at the weekend of what possums were sleeping where in the garden. These are common brush-tailed possums which are common in suburban Canberra. The one above is a young male which was in a nestbox above the logpile. He came down willingly for a piece of bread and jam.


The next four shots are of a mother with her well grown youngster which were sleeping in one of the boxes in the back garden. She came out first and waited for the young one to climb out after her. The boxes were put up to encourage rosellas, crimson or eastern, to nest in the garden. However,the possums found the soft pine wood easy to chew and they quickly enlarged the entrance holes to fit them, and they have subsequently taken them all over. They use them for alternative roost holes used in rotation, although they do use one or other box for long periods before shifting.


Once out the young one quickly clambered onto the mother's back.
Then off they went up the tree and through the continuous canopy of the trees along the back fence. 

Tuesday 26 July 2011

Snowy Mountains


I was snow-boarding up in the Snowy mountains last week, and it was snowy. There was a steady south-east wind bringing in cold moist air all week. This created constant light snowfall and freezing fog. The best riding was through the woods on deep consolidated snow, picking your own slalom route through the trees.

 The leaves on the snow gums were coated with thick ice as the fog froze around them.

 The granite tors were coated in ice too.

The whole landscape was deep in winter's grip. Wonderful stuff.

Tuesday 5 July 2011

Ringing a Golden Eagle Chick

Yesterday I was up in one the more remote glens in the Scottish Highlands ringing a Golden Eagle chick. The eyrie is set in a high corrie, on a cliff overlooking the wide glen below.


There was only one chick in the nest, about six and a half weeks old. It would have hatched in mid-May when the weather was rather wet and windy, which could explain why there was only one chick when eagles in that area can easily rear two chicks per year. Eagles here usually lay two eggs and as there was no sign of a failed egg, it could be assumed that one chick had died earlier - perhaps due to the adults not being able to provide enough food for two.


Ewan Weston clambered over to the nest and ringed the chick as well as collected DNA samples for parental identity and other relatedness with other samples from birds collected over recent years. The nest is typically large for a golden eagle and easily big enough to hold our weight and size as well as that of the chick.


 Prey items in and around the eyrie included mountain leveret, red grouse chick, meadow pipit juvenile and a water vole - a species considered rare in the UK now, although they are common in some Highland glens such as where this one would have been caught.



Monday 4 July 2011

Barn Owls


Summer is well on in Scotland with most birds feeding large young and many are fledged. One species which is often a little later to breed is the Barn Owl and today I went with my brother Rab to a barn owl friendly farmer, Chris's barn. The nest is is a box placed for the owls on top of a stack of round hay bales and there were three chicks and a dud egg in the box. The chicks were a perfect age for ringing.


Barn owls have long pointed faces, not round faces like other owls such as Tawny or Great Grey. The chicks are very docile, almost falling over in a sort of drowsiness trance while being handled. And they have black eyes, none of those piercing yellow or orange irises like Short-Eared or Long-Eared Owls.

Thursday 30 June 2011

Last Day

 Redpoll on nest in willow shrub

Today was the last day of our trip to north Norway. We rounded it off with catching and ringing another Broad-Billed Sandpiper and a brood of Wood Sandpiper chicks.

But I thought I should mention the passerines which nest here in the arctic. Here are a couple of shots of a Redpoll on her nest set in a low willow bush. The nest is a fine mesh of willow down and grasses, lined with a thick wad of Willow Grouse feathers - the white ones moulted by the grouse as they turn from white to brown plumage in spring. A wonderfully warm nest for these high latitudes.

  Redpoll nest and eggs

And as a last parting shot here is a fledgling Hawk Owl, one of a brood of four which we came across today.



Wednesday 29 June 2011

Ringing Broad-Billed Sandpipers

Today we were ringing Broad-Billed Sandpipers. This whole trip to north Norway has been focused on the study of these birds and other arctic-breeding waders, especially Jack Snipe. And the study has been ongoing for several years, led by my brother Rab, Skitts to the birders who know him, and Karl-Birger Strann of the Norsk institutt for naturforskning in Tromso. I have been a mere helper on this trip and am grateful to them both for a great experience, and to Ed Duthie and Harry Scott who have helped on this project before and have been a great lead on the birds of the area. All have made this an excellent excursion.

 Adult Broad-Billed Sandpiper marked with a unique
combination of colour rings for ready identification
     in the field wherever it is seen on the breeding area
 or in its wintering grounds.

 The chicks are incrediibly well camouflaged, their
white speckled down mimicing the water glistening
on the waterlogged vegetation where they live in the arctic mires.

And they are tiny, all four sit easily within the palm of a hand.

Tuesday 28 June 2011

Mountain heath


We were up on the  North Norwegian mountain heath, mire and woodland today, in a very remote place close to the Finnish border. Wonderful light after a shower of rain.

A dunlin stands on a mossy hummock watching over his chicks.

A grand old mountain birch tree, probably hundreds of years old, and grown in a natural twisted form, unlike most of the trees close to roads or easy access where they grow in a close coppiced form.


 Intricate tapestries of lichens covered the ground

Saturday 25 June 2011

Long-Tailed Skuas

 Long-Tailed Skua, showing the fine long tail streamers

It is not only the owls which are breeding well during the current peak in small mammal numbers. Long-Tailed Skuas are also cashing in on the abundant lemmings. These seem to have peaked in numbers during winter, but the numbers are still high enough for the birds to rear their chicks.


 Adult skuas defend their chicks by stooping at any intruder


A family party of Long-Tailed Skuas at the nest.Handsome birds in flight and on the ground.
More owls

 Adult female Short-Eared Owl

The are high numbers of grey-sided voles in northern Scandinavia at the moment and consequently the owls are breeding well, rearing large broods of chicks on the abundant food supply. Yesterday I saw Hawk Owls with a large brood, today I saw a brood of seven Short-Eared Owls.

 Short-Eared Owls have beautiful big yellow eyes

Owl chicks are of different ages, by a day or so between each. This is because the female begins to incubate as soon as the first egg is laid. In a brood of seven there is a large range of ages and sizes of the chicks. In this nest there were only four chicks still in the nest. The other three had wondered into the nearby shrubbery, which all helps to ensure that if the nest is brood are attacked by a predator, at least some chicks should survive.

Four owlets in the ground nest of a Short-Eared Owl
with a grey-sided vole at the side - supplied entirely
by the male bird
Hawk Owls

 Adult Hawk Owl

It was raining for a couple of days here in North Norway, so we went for a drive down to Finland for a walk in the pinewoods. The birds were a bit quiet due to the rain, it was only a light drizzle, but it was good to see and hear Waxwings, Redstarts and Pied Flycatchers. And it especially good to come across a pair of Siberian Jays, and a fledged brood of Hawk Owls. There were at least five large fledglings, and the adults were unconcerned about us as they brought in voles, grey-sided, while we were there.

One of the larger owlets

Tuesday 21 June 2011

Lapland flowers

Arctic Bell-Heather Casiope tetragona

While looking for birds in north Norway, I find myself walking past some wonderful displays of wild flowers. Here are just a very few selected species. The bell-heather and diapensia grow up on the high plateux, where it is windswept and the plants all grow very low to the ground.

 
Diapensia lapponica

In the lower heaths and bogs one of the mose abundant plants is the Labrador Tea, along with various species of heaths, such as Mountain Heath Phyllodoce caerulea and Bog Rosemary Andromeda polifolia.

 Labrador Tea Ledum palustre

 Lapland Lousewort Pedicularis lapponica

Waders in north Norway

 Spotted redshank

I am up in north Norway at the moment studying high latitude breeding waders. The habitats are lakeside mires within which there are several sub-habitats utilised by various waders for feeding and nest sites. Open water is used by red-necked phalaropes, open sedge is used by broad-billed sandpiper, close growing sedge is used by jack snipe, wood sandpiper and reeves. Spotted redshanks nest on the nearby heath and lead their chicks into the bogs to feed.

 Lakeside mire

 Spotted redshank

Wood sandpiper