fredag 31. juli 2015

Revtangen BO July 29th

NE light breeze turning N and increasing enough to make trapping not very efficient. Cloudy. Most of the nets were open from 07-17, netmeter hours approx. 2600.

Ringed: Collared dove 2, barn swallow 7, white wagtail 2, meadow pipit 2, northern wheatear 1, willow warbler 5, starling 1, house sparrow 2, tree sparrow 1, greenfinch 5, linnet 5, lesser redpoll 1. Total = 34. Also 7 controls.

Ringmerket: Tyrkerdue 2, låvesvale 7, linerle 2, heipiplerke 2, steinskvett 1, løvsanger 5, stær 1, gråspurv 2, pilfink 1, grønnfink 5, tornirisk 5, brunsisik 1. Total = 34. 

Our 3 Robinson-traps produced 70 species of Lepidoptaera, the best night of the year so far but still not great. Most noteworthy was the high number of hawk moths, with a record 8 elephant hawk-moths and singles of poplar hawk-moth and bedstraw hawk-moth. Also a new species for Revtangen BO, Athrips pruinosella. 

Athrips pruinosella.

Observations: A green sandpiper was in our new pond this morning, unfortunately before the nets were open. Another 3-4 green sandpiper flew over during the morning, otherwise it was rather uneventful. 
Alf Tore Mjøs and Olav Runde

torsdag 30. juli 2015

Revtangen OS July 27th

Shifting light wind turning NW light breeze. Cloudy, only 8,5 degrees in the morning. Nets up 06.30-15.30, netmeter hours approx. 2900.

Ringed: Common whitethroat 1, garden warbler 1, willow warbler 8, great tit 1, starling 3, house sparrow 4, tree sparrow 5, greenfinch 4, linnet 4. Total = 31. Also 9 controls. 

Ringmerket: Tornsanger 1, hagesanger 1, løvsanger 8, kjøttmeis 1, stær 3, gråspurv 4, pilfink 5, grønnfink 4, tornirisk 4. Total = 31. Også 9 kontroller.

1 cy common whitethroat. 1k tornsanger.

Observations: Very few waders still at Revtangen, but some quality today in the form of an adult white-rumped sandpiper accompanied by an adult curlew sandpiper and adult little stint. Visiting birder reported an osprey flying over, and a merlin managed to escape a mistnet beforewe could get our hands on it. 

Alf Tore Mjøs. 2 visitors. 

søndag 26. juli 2015

Revtangen BO July 25th

A bit of "Holiday-ringing" today with most of the nets open from 08-15, netmeter hours approx. 1800.

Ringed: Collared dove 1, barn swallow 1, white wagtail 3, meadow pipit 1, willow warbler 7, hooded crow 1, common starling 11, house sparrow 3, tree sparrow 1, greenfinch 5, lesser redpoll 3, mealy redpoll 3, eurasian siskin 1, linnet 4. Total = 45. Also 13 controls.

Ringmerket: Tyrkerdue 1, låvesvale 1, linerle 3, heipiplerke 1, løvsanger 7, kråke 1, stær 11, gråspurv 3, pilfink 1, grønnfink 5, brunsisik 3, gråsisik 3, grønnsisik 1, tornirisk 4. Total = 45. Også 13 kontroller.

The crow of the year? We usually trap one or two juveniles during the summer. This one has been equipped with a white colourring "A011" from a newly established colourringing project in the region. Kråke (1K), med hvit fargering "A011" fra et nyetablert fargemerkingsprosjekt på Jæren. 
White wagtails are also colourringed, yellow rings with a 3-letter inscription. Linerler med gule fargeringer kan rapporteres her:

Alf Tore Mjøs

lørdag 25. juli 2015

Revtangen BO July 22nd

No ringing today, but the moth traps were up last night. Still no summer temperatures, but 14 degrees and light southerlies are as good as it gets these days....

The catch was not impressive, with 53 species and nothing of any real interest. This Buff-tip (Phalera bucephala) was a small highlight, though, with only a handful of records from Revtangen BO before.

Oksehodespinner (Phalera bucephala). Arten kan leve på det meste som finnes av norske løvtrær.

Alf Tore Mjøs

onsdag 22. juli 2015

Revtangen BO July 20th

Light breeze from a mainly westerly direction. Most nets were up from around 08-15, netmeter hours approx. 2000. Fairly quiet, few birds around.

Ringed: Collared dove 1, barn swallow 1, northern wheatear 1, chiffchaff 1, willow warbler 5, starling 1, house sparrow 5, lesser redpoll 1. Total = 16. Also 6 controls. 

Ringmerket: Tyrkerdue 1, låvesvale 1, steinskvett 1, gransanger 1, løvsanger 5, stær 1, gråspurv 5, brunsisik 1. Total = 16. Også 6 kontroller. 

Collared dove. Our 32nd this season, an amazing number....Årets tyrkerdue nr. 32 på Revtangen OS.  

3 Robinson-traps produced 49 species of moths, about half the number of species that we SHOULD have at this time of the year, and absolutely nothing out of the ordinary. The cold summer and westerly winds is very bad also for moth trapping, no surprise there. 

Alf Tore Mjøs

tirsdag 14. juli 2015

Revtangen BO July 13th

Shifting breeze and part cloudy. Nets were up from 06-16, netmeter hours approx. 3000. 

Ringed: Collared dove 1, barn swallow 1, meadow pipit 2, blackcap 1, willow warbler 11, great tit 5, house sparrow 15, tree sparrow 3, starling 1,  greenfinch 9, siskin 2, lesser redpoll 5, linnet 5. Total = 61. Also 19 controls. 

Ringmerket: Tyrkerdue 1, låvesvale 1, heipiplerke 2, munk 1, løvsanger 11, kjøttmeis 5, gråspurv 15, pilfink 3, stær 1, grønnfink 9, grønnsisik 2, brunsisik 5, tornirisk 5. Total = 61. Også 19 kontroller. 

A few insects news: The moth traps contained 45 species, not very impressive in July and nothing out of the ordinary. More interesting was this sawfly Acantholyda posticalis, a species capable of inflicting massive damage to pine forest. There is only one previous record from Rogaland county listed in the Norwegian species information portal "Artskart".

   A couple of flies not previously record from Revtangen BO: Rhagio lineola (above) and Rhagoletis alternata (below). 

Amalie Ask and Alf Tore Mjøs. 3 visitors.

lørdag 11. juli 2015

Revtangen BO July 11th

We've had a few very windy days, and the wind and salt has done some damage to the vegetation in the garden, in particular on the black elderberry bushes. But that's just the price we pay for being close to the sea....

Today there was decent conditions with clouds and little wind in the morning, and most of the nets were up from 06-12 when it started raining. Netmeter hours approx. 1500. 

Ringed: Collared dove 2, barn swallow 2, white wagtail 1, meadow pipit 2, northern wheatear 1, european robin 1, song thrush 1, common whitethroat 1, blackcap 4, willow warbler 11, great tit 1, starling 9, house sparrow 21, greenfinch 14, siskin 1, mealy redpoll 2, lesser redpoll 3, linnet 7. Total = 84. 

Ringmerket: Tyrkerdue 2, låvesvale 2, linerle 1, heipiplerke 2, steinskvett 1, rødstrupe 1, måltrost 1, tornsanger 1, munk 4, løvsanger 11, kjøttmeis 1, stær 9, gråspurv 21, grønnfink 14, grønnsisik 1, gråsisik 2, brunsisik 3, tornirisk 7. Total = 84. 

Amalie Ask and Alf Tore Mjøs

fredag 3. juli 2015

Revtangen BO July 2nd

Summer suddenly arrived, and this afternoon we reached 28 degrees which is by far the warmest day of the year. The winds were quite strong from the SE, ony a few nets were open around the feeder from around 9-13.

Ringed: Barn swallow 4 pulli, willow warbler 1, house sparrow 12, greenfinch 2. Total = 19. Also 4 controls.

Ringmerket: Låvesvale 4 pulli, løvsanger 1, gråspurv 12, grønnfink 2. Total = 19. Også 4 kontroller. 

Today was mainly about garden work, and the main project was the construction of the new garden pond. The digging was done last summer, and today we put down the underlayment and rubber pond liner. We also filled it half-way up to check for leaks. So far it looks good!

In July the content of the moth traps are often more interesting than the birds. We use 3 Robinson-traps to record nocturnal lepidoptera and other insects. The warm night brought us two new species never before recorded at Revtangen BO: Ruby Tiger (Phragmatobia fuliginosa) and Red-necked Footman (Atolmis rubricollis).
Ruby Tiger. Rustvingespinner

 Red-necked Footman. Rødhalslavspinner. 

Håvard Husebø and Alf Tore Mjøs. 2 visitors.