Revtangen BO March 24th

Nets open 07-11.30, netmeter hours approx. 1200. Cloudy and SW light breeze. 

Ringed: Common Blackbird 9, House Sparrow 5, Tree Sparrow 2, Greenfinch 2, Yellowhammer 3. Total = 21. Also 12 controls. 

Observations: Eurasian Woocock 1

Jon Andreas Antonsen, Jone Antonsen and Alf Tore Mjøs

Revtangen BO March 22nd

Work day at Revtangen today. Haavard is digging the foundations for a new tool-shed next to the ringing barrack. The nets were open between 10-15, netmeter hours approx. 1300. 

Ringed: Common Blackbird 2, House Sparrow 3, Tree Sparrow 3, Chaffinch 1, Yellowhammer 1. Total = 10.

Eilef Herikstad, Haavard Husebö and Alf Tore Mjøs

Summary of the 2017 season

The 2017 season was a wet and windy one, and this had a negative impact on the season total on the Bird Observatory. The spring total was decent and there were 3 days with more than 100 birds in the catch, unusual in spring. Autumn came, as many times before, with wind and rain and there was not a single period with stable nice weather for more than a few days. In particular, the latter half of October and all of November was dominated by wet and windy weather. This was unfortunate, since there were some interesting irruptions of woodpeckers and redpolls that went under-recorded. A big thanks to everyone who participated and all our visitors!

Species	Revtangen BO	Other sites	Total
Greylag Goose		1	1
Pink-footed Goose		1	1
Brent Goose (B.b.bernicla)	1		1
Mute Swan		3	3
Mallard		76	76
Pintail		1	1
Tufted Duck		29	29
Coot		7	7
Moorhen		5	5
Water Rail	1		1
Herring gull		154	154
Lesser Black-backed Gull		323	323
Great Black-backed Gull		53	53
Common Gull		186	186
Black-headed Gull		22	22
Glaucous Gull		2	2
Sparrowhawk	1	2	3
Bar-tailed Godwit	60		60
Dunlin	1007		1007
Purple Sandpiper	2		2
Curlew Sandpiper	3		3
Little Stint	8		8
Red Knot	58		58
Sanderling	113		113
Turnstone	38		38
Common Redshank	46		46
Spotted Redshank	2		2
Greenshank	5		5
Wood Sandpiper	15		15
Green Sandpiper	46		46
Common Sandpiper	5		5
Common Ringed Plover	33		33
Woodcock	1		1
Common Snipe	5		5
Wood Pigeon	9		9
Collared Dove	19		19
Common Cuckoo	1		1
Black Woodpecker	1		1
Green Woodpecker		3	3
Grey-headed Woodpecker	4	2	6
Great Spotted woodpecker	33	11	44
Lesser Spotted Woodpecker	12	1	13
Three-toed Woodpecker		1	1
Wryneck	3	7	10
Skylark	1		1
Sand Martin	7		7
Barn Swallow	47	5	52
Tree Pipit	52	10	62
Olive-backed Pipit	1	1	2
Meadow Pipit	502		502
Pechora Pipit	1		1
Rock Pipit	4		4
White Wagtail	34	3	37
Pied Wagtail	1		1
Grey Wagtail	74		74
Wren	116	20	136
Bohemian Waxwing	3		3
Dunnock	21	10	31
Robin	228	101	329
Redstart	58	1	59
Black Redstart	2		2
Bluethroat		1	1
Whinchat	3		3
Northern Wheatear	11		11
Greenland Wheatear	4		4
Song Thrush	100	7	107
Redwing	303	26	329
Redwing (T.i.coburni)	3		3
Fieldfare	140	4	144
Blackbird	250	38	288
Ring Ouzel	2		2
Mistle Thrush	1		1
Icterine Warbler	3		3
Blackcap	251	55	306
Common Whitethroat	63	1	64
Lesser Whitethroat	21	2	23
Garden Warbler	152	34	186
Barred Warbler	3		3
Grasshopper Warbler	16		16
Reed Warbler	25		25
Blyth's Reed Warbler	1		1
Marsh Warbler	1		1
Sedge Warbler	30		30
Wood Warbler	1		1
Willow Warbler	706	167	873
Chiffchaff	124	7	131
Siberian Chiffchaff	2		2
Yellow-browed Warbler	2		2
Goldcrest	78	12	90
Spotted Flycatcher	11	1	12
Pied Flycatcher	28	26	54
Long-taild Tit	23	20	43
Great Tit	109	416	525
Coal Tit	39	8	47
Crested Tit	1	3	4
Willow Tit	61	22	83
Marsh Tit		3	3
Blue Tit	841	247	1088
Eurasian Nuthatch	22	45	67
Tree Creeper	7	13	20
Starling	177	7	184
House Sparrow	189	79	268
Tree Sparrow	109	15	124
Eurasian Jay		2	2
Magpie	1	3	4
Hooded Crow	1	1	2
Chaffinch	82	156	238
Brambling	87	61	148
Greenfinch	199	408	607
Siskin	7	108	115
Linnet	80		80
Lesser Redpoll	100	41	141
Mealy Redpoll	569	33	602
Arctic Redpoll	7		7
Common Rosefinch	2	1	3
Parrot Crossbill	2		2
Bullfinch		13	13
Hawfinch	1	2	3
Goldfinch	23	1	24
Reed Bunting	13	1	14
Little Bunting	2		2
Yellowhammer	75	10	85
Total	7848	3141	10989

Revtangen BO March 10th

SE - SSE winds 5-7 m/s, a bit too windy at times. Cloudy, 2-4 degrees, later a bit of sun. Nets open 07-13, netmeter hours approx. 1600. 

Ringed: Collared Dove 1, Winter Wren 1, Common Blackbird 2, Fieldfare 12, Common Starling 1, Yellowhammer 1. Total = 18. Also 5 controls. 

Two new Common Blackbirds today, both were adult males. Probably the first migrants?

Observations: Eurasian Woodcock 2, Sparrowhawk 1. 

Renate Berg, Espen Helgesen and Alf Tore Mjös. 3 visitors.

Revtangen BO March 7th

Spring is here according to the calendar, but we are just coming out of the coldest week-and-a-half we've had this winter. The lakes and ground is still frozen, but today saw temperatures of 3-4 degrees and cloudy. The wind was in the SE-SSE, a bit variable and a little too much for efficient trapping at times. Nets open 07-15, netmeter hours approx. 2000. No indication of any migration, the catch is still made up exclusively of wintering birds. 

Ringed: Eurasian Woodcock 2, Collared Dove 1, Common Blackbird 2, Fieldfare 8, Redwing 3, Tree Sparrow 1, Greenfinch 2, Chaffinch 1, Yellowhammer 3. Total = 23. Also 19 controls. 

Observations: Eurasian Woodcock 5+. Also, a White-Tailed Eagle ringed as a chick in Suldal in 2014 was read (coded black ring with white inscription) sitting on the ice at lake Orrevatnet. 

Alf Tore Mjös

Revtangen BO February 18th

SW 5 m/s, later light shifting breeze, a few light rainshowers early. 3-4 degrees, mostly cloudy. Nets open 09.30-18, netmeter hours approx. 2200. Few birds around, most of the thrushes were on fields 0,5-1 km away. 

Ringed: Redwing 3, Common Blackbird 1, Fieldfare 5, House Sparrow 1. Total = 10. Also 8 controls, including a Greenfinch not from Revtangen. 

Observations: Whooper Swan 105 in the fields west of the station; around 200 Eurasian Wigeon also flew over the station at dusk towards the same fields. Eurasian Woodcock 1, Eurasian Sparrowhawk 1, Eurasian Skylark 2-3 flew over. 

Alf Tore Mjös

Revtangen BO February 3rd

Light SE to almost no wind. Nets open from dusk till dawn. Around minus 2 degrees in the morning and a bit warmer in the middle of th day, but no snow on the fields. Still lots of Fieldfares around, now in "good to normal" condition. 

Ringed: LONG-EARED OWL 1, Redwing 1, Fieldfare 46, Mealy Redpoll 1, Yellowhammer 3. Total = 52. Also 13 controls. 

Ringmerket: HORNUGLE 1, rødvingetrost 1, gråtrost 46, gråsisik 1, gulspurv 3. Også 13 kontroller. 

Renate Berg, Espen Helgesen, Alf Tore Mjøs.