onsdag 17. mai 2017

Revtangen BO May 17th

Thick fog in the morning hours, and the nets caught little else than water. The fog eventually cleared but a southern 5-7 m/s was far from ideal and the catch was all but impressive. Nets open 06-18, netmeter hours approx. 4000. 

Ringed: Collared Dove 1, Fieldfare 2, Redwing 1, Sedge Warbler 2, Common Whitethroat 3, Willow Warbler 5, Common Starling 2, House Sparrow 1, Chaffinch 1. Total = 18. Also 8 controls, including a Sedge Warbler not from Revtangen. 

Ringmerket: Tyrkerdue 1, gråtrost 2, rødvingetrost 1, sivsanger 2, tornsanger 3, løvsanger 5, stær 2, gråspurv 1, bokfink 1. Total = 18. Også 8 kontroller, inkl. en sivsanger merket annetsteds. 

Observations: 
Revtangen: Brent Goose 3, Common Scoter 70, Long-tailed Duck 1, Bar-tailed Godwit 3, Red Knot 31, Turnstone 17, Purple Sandpiper 1, Dunlin 160, Common Redshank 5, Common Sandpiper 2. 

The doe Roe Deer at the top was courted by the buck in the lower photo, along the gravel road down to Revtangen in the early morning.

Alf Tore Mjös. 1 visitor.

tirsdag 16. mai 2017

Revtangen BO May 15th

Thick fog in the morning, and the nets were not opened until after 9. Winds from the south 6-8 m/s. Nets open until 18, netmeter hours approx. 2800. 

Ringed: Meadow Pipit 2, Greenland Wheatear 1, Whinchat 1 (first this season), Common Whitethroat 1, Willow Warbler 2, Common Starling 1, House Sparrow 1, Yellowhammer 1. Total = 10. 

Ringmerket: Heipiplerke 2, Steinskvett 1 (leucorhoa), buskskvett 1, tornsanger 1, løvsanger 2, stær 1, gråspurv 1, gulspurv 1. Total = 10.

Observations: Common Quail 1 male singing. 

Alf Tore Mjös

Revtangen BO May 14th

Continued SE. Fewer birds than previous days, but still a decent catch.

Ringed: Wood Pigeon 2, White Wagtail 1, Tree Pipit 3, Greenland Wheatear 1 (first this season), Common Redstart 3, Blackcap 1, Common Whitethroat 2, Lesser Whitethroat 2, Willow Warbler 16, Chiffchaff 1, Common Starling 3, Lesser Redpoll 3, Common Linnet 1. Total = 39. A Blackcap with a Dutch ring was controlled.

Ringmerket: Ringdue 2, linerle 1, trepiplerke 3, steinskvett 1 (leucorhoa), rødstjert 3, munk 1, tornsanger 2, møller 2, løvsanger 16, gransanger 1, stær 3, brunsisik 3, tornirisk 1. Total = 39. En munk med nederlandsk ring ble kontrollert.

Observations: Gyrfalcon 1 2cy. 

Renate Berg, Espen Helgesen and Haavard Husebö. 

Revtangen BO May 13th

Continued SE, but not as many birds around as yesterday. 

Ringed: European Robin 1, Common Redstart 6, Sedge Warbler 1, Blackcap 1, Garden Warbler 4, Common Whitethroat 1, Lesser Whitethroat 1, Willow Warbler 37, Chiffchaff 1, Pied Flycatcher 8, Spotted Flycatcher 2, Common Starling 2, Lesser Redpoll 2. Total = 67. 

Ringmerket: Rødstrupe 1, rødstjert 6, sivsanger 1, munk 1, hagesanger 4, tornsanger 1, møller 1, løvsanger 37, gransanger 1, svarthvit fluesnapper 8, gråfluesnapper 2, stær 2, brunsisik 2. Total = 67. 
 

Observations: Western Marsh Harrier 1 female. 

Renate Berg, Espen Helgesen and Haavard Husebö

mandag 15. mai 2017

Revtangen BO May 12th

ESE winds all over southern Norway today produced a large fall of migrants, and several bird observatories reported record numbers of birds caught and ringed (more than 600 at Jomfruland, more than 300 at Utsira). A good spring catch at Revtangen also:

Collared Dove 2, White Wagtail 1, Meadow Pipit 1, Common Redstart 11, Greenland Wheatear 1 (first this season), Song Thrush 2, Redwing 2, Blackcap 2, Garden Warbler 1 (first this season), Lesser Whitethroat 7, Common Whitethroat 8, Willow Warbler 91, Chiffchaff 1, Pied Flycatcher 3, Spotted Flycatcher 1 (first this season), House Sparrow 1, Brambling 1, Greenfinch 2, Lesser Redpoll 4, Common Linnet 3. Total = 145.

Ringmerket: Tyrkerdue 2, linerle 1, heipiplerke 1, rødstjert 11, steinskvett (leucorhoa) 1, måltrost 2, rødvingetrost 2, munk 2, hagesanger 1, møller 7, tornsanger 8, løvsanger 91, gransanger 1, svarthvit fluesnapper 3, gråfluesnapper 1, gråspurv 1, bjørkefink 1, grønnfink 2, brunsisik 4, tornirisk 3. Total = 145. 

Haavard Husebö, Renate Berg and Espen Helgesen

søndag 7. mai 2017

Revtangen BO May 6th

Light shifting breeze, mostly sunny. Most nets open 10-21, netmeter hours approx. 3000.

Ringed: Common Redstart 2, Blackcap 3, Willow Warbler 3, Chiffchaff 1, House Sparrow 2, Brambling 1, Greenfinch 1, Common Linnet 1. Total = 14. Also 7 controls. 

Ringmerket: Rødstjert 2, munk 3, løvsanger 3, gransanger 1, gråspurv 2, bjørkefink 1, grønnfink 1, tornirisk 1. Total = 14. Også 7 kontroller. 

Observations: The almost windless conditions proveidet a rare opportunity to count divers and other birds restuing on the sea, so we checked the sea area from Revtangen - Reve kai with the telescope. The count included 87 Great Northern Loons, 5 Red-thropated Loons, 180 Common Scoter, 200 Long-tailed Ducks, 8 Razorbill, 7 Common Guillemot and 20 Black Guillemot. 

We tried two Robinson-traps last night but only 3 species of moths caught, includingh this Powdered Quaker (Orthosia gracilis). Punktseljefly. 

A long awaited addition to the lepidoptera list at Revtangen BO: This Emperor Moth (Saturnia pavonia) was attracted with a pheromone-lure. Nattpåfugløye.

A new species of Long-horn Beetle at Revtangen BO was dicovered on a furled-up mistnet, Rhagium inquisitor. Bartreløper.

Alf Tore Mjös. 1 visitor.

lørdag 6. mai 2017

Revtangen BO May 5th

Still sunny and very quiet on the migrant front. Light NE in the morning turning SW and then NW in the middle of the day. Nets open 05.15, netmeter hours approx. 3200. 

Ringed: White Wagtail 1, Meadow Pipit 1, European Robin 1, Lesser Whitethroat 1, Willow Warbler 1, Wood Warbler 1, Chiffchaff 3, Common Starling 1, House Sparrow 1, Lesser Redpoll 2, Yellowhammer 1. Total = 14. Also 8 controls, including a Common Blackbird not from Revtangen. 

No doubt the highlight of todays catch, Wood Warbler is less than annual at Revtangen BO but most years we ring one or two. Bøksanger.

Ringmerket: Linerle 1, heipiplerke 1, rødstrupe 1, møller 1, løvsanger 1, bøksanger 1, gransanger 3, stær 1, gråspurv 1, brunsisik 2, gulspurv 1. Total = 14. Også 8 kontroller, inkl. en svarttrost merket annetsteds. 

Observations: Revtangen: Yellow-billed Loon 1, Great Northern Loon 34, Red-throated Loon 18, Black-throated Loon 4, Whimbrel 7, Bar-tailed Godwit 2, Turnstone 1, Gyrfalcon 1 2cy.

Eurasian Curlew with colourrings, just a few hundred meters away from where it wass ringed as a chick in 2013. Storspove. 
 

This male Black-tailed Godwit was feeding close to the colourringed Curlew. The future for this popultion of the nominate subspecies breeding at Jaeren seems dark, after the Norwegian government abandoned the action plan a few years ago. So far we have seen no other initiative to save this species, seems like the governments plan is to wait until its too late - problem solved. Svarthalespove hann. 

Whimbrels and one Bar-tailed Godwit past Revtangen. Småspove og en lappspove. 

Gyrfalcon 2cy. Jaktfalk 2K. 

Another addition to the Revtangen Wetland System was added yesterday and today. We've removed a few trees and bushes and replaced them with another small pool and a small "creek". The plan is to fill parts of the pool and most of the "creek" with water plants.

Haavard Husebö and Alf Tore Mjös. 1 visitor.