fredag 4. mai 2018

Revtangen BO May 2018 - the BLOG has moved!

To all our readers: Revtangen BO has released a brand new wedsite and FB-pages. We will continue the BLOG in English at our website here:

Please update your bookmarks and continue reading about Birdringing, observations and moth trapping at the oldest BO in Scandinavia!

FB-pages here:

Best wishes,

Alf Tore Mjös

søndag 29. april 2018

Revtangen BO April 29th

NNE turning NNW, 8-10 m/s. Clears skies, but only 2 degrees in the morning. Nets open 05.30-19.30, netmeter hours approx. 3900. 

The first Sedge Warbler of the season was trapped today. Sivsanger.

Ringed: Song Thrush 1, Sedge Warbler 1 (first this season), Blackcap 2, Willow Warbler 6, Chiffchaff 1, House Sparrow 1, Chaffinch 2, Greenfinch 1, Eurasian Siskin 2 (first this season). Total = 17. Also 6 controls. 

Eurasian Siskin, 3cy+ male. Grønnsisik 3K+ M

Observations: European Golden Plover 400 (approx), European Goldfinch 2+. Migrating Red-throated Loons numbered 40 in a sample count 07.15-08.15 past Revtangen, apart from that little visible migration. 

Alf Tore Mjös

Revtangen BO April 26th

5-7 m/s from the S - SW. Cloudy. Nets open 05.15 - 15.15, netmeter hours approx. 3300. Very quiet, but work in progress with the new windbreaker wall as well as some trimming of the treetops in the southern part of the trapping garden. 

Only 5 birds ringed: Fieldfare 1, Willow Warbler 1, Chiffchaff 1, Common Starling 2. Also 2 controls. 

Haavard Husebö and Alf Tore Mjös

Revtangen BO April 25th

SW 5-7 m/s, mostly cloudy. Nets open 05.30-16.30. Work in progress in the garden all day, some disturbance to the trapping area. 

Ringed: Woodpigeon 1, White Wagtail 1, Fieldfare 3, Willow Warbler 2, Chiffchaff 4, Greenfinch 1, Common Linnet 1, European Goldfinch 2. Total = 16. Also 6 controls. 

Haavard Husebö and Alf Tore Mjös

søndag 22. april 2018

Revtangen BO April 22nd

SE light winds around dawn, turning S and increasing from around 9. Rather cold, only 2 degrees at dawn. Nets closed at 11 because of wind and in coming rain. Netmeter hours approx. 1800. 

Ringed: White Wagtail 2, European Robin 1, Common Blackbird 1, Song Thrush 1, Fieldfare 2, Blackcap 4, Willow Warbler 3, Chiffchaff 7, Goldcrest 1, Chaffinch 1, Common Linnet 1, European Goldfinch 1. Total = 25. Also 6 controls. 

Alf Tore Mjös. 2 visitors.

lørdag 21. april 2018

Revtangen BO April 21st

A bit too windy from the W early in the day for trapping. Kept the nets around the feeder open 15.30-18.30, while enjoying myself with washing the floor of the ringing lab. Netmeter hours approx. 280. 

Ringed: House Sparrow 2, Tree Sparrow 1, Chaffinch 2, Greenfinch 1, European Goldfinch 2. Total = 8. Also 15 controls, including a Chaffinch with a British ring and a House Sparrow ringed in 2013. 

Alf Tore Mjös

Revtangen BO April 20th

Nets open 06-17. Light S turning SW, 5-7 m/s. A bit windy most of the time because there is little protection from this wind direction. A bit of work also today: Haavard finished digging holes for the foundation to the new windbreaker wall. Two more nets were put up in the NW, and some repairs were made to the net next to the feeder. The annual fight with the invasive Rosa rugosa kicked off with a systematic removal of remaining shoots on the flower field created two years ago north of the cabin. 

Ringed: Collared Dove 1, Meadow Pipit 1, Dunnock 6, Song Thrush 1, Redwing 2, Common Blackbird 2, Blackcap 4, Willow Warbler 3 (first this season), Chiffchaff 4, Goldcrest 2, Great Tit 1, House Sparrow 1, Chaffinch 7, Greenfinch 3, Common Linnet 1, European Goldfinch 4, Yellowhammer 1. Total = 44. Also 17 controls, including a male Chaffinch ringed as a 1cy in 2009! According to the ringing database it should be the 3rd oldest ever recorded in Norway. 

This male Chaffinch was ringed as a 1cy at Revtangen BO in July 2009, and has not been controlled previously. Bokfink, ringmerket som 1K i juli 2009.

Very few Goldfinches have ever been trapped at Revtangen in spring, so four today was a nice surprise. 2cy male. Stillits, 2K hann.

The first 3 Willow Warblers of the year turned up in the afternoon. As usual with the first wave, all were males. Løvsanger.

Observations: Merlin 1, Green Sandpiper 1, Golden Plover 300+, Whimbrel 1, Tree Pipit 4 migrating north.

Haavard Husebö and Alf Tore Mjös