Revtangen BO May 27-29th

Continued heatwave - more moths than birds

The unusually settled warm weather continues, with temperatures reaching above 30 degrees many places in Western Norway. Most days the wind is light NE in the early morning, turning NW around 10-11. In total 74 birds were ringed these 3 days. The catch in the Robinson Traps was far better, and several species of smaller moths were recorded for the first time at the BO.

May 27th: Nets open 06-14, netmeter hours approx. 2600. Ringed:  Barn Swallow 1, White Wagtail 1, Meadow Pipit 1, Icterine Warbler 1, Common Whitethroat 1, Garden Warbler 1, Willow Warbler 3, Common Starling 1, House Sparrow 2, Yellowhammer 1. Total = 13. Also 3 controls. The night was not too warm, 10-12 degrees, and the moth traps produced 16 species.


Fox Moth (male), Revtangen BO May 28th. A scarce but regualar species in the traps. Bringebærspinner.

May 28th: The best day in a while, with a nice selection of late migrants. Nets open 06-19, netmeter hours approx. 4300. Ringed: Collared Dove 1, Barn Swallow 1, Common Redstart 4, Icterine Warbler 1, Sedge Warbler 1, MARSH WARBLER 1, Common Whitethroat 1, Garden Warbler 6, Willow Warbler 17, Chiffchaff 1, Pied Flycatcher 3, Spotted Flycatcher 1, Common Starling 5, Lesser Redpoll 1, European Goldfinch 1. Total = 46. Also 7 controls. The night was quite warm (15-17 degrees) and the moth traps produced 36 species, a very high number in May. Included were no less then 3 species new to Revtabgen BO: Lampronia flavimitrella, Pammene rhediella and Ancylis myrtillana.


Several Tipula lateralis, a crane fly with few records in Norway, turned up in the Moth Traps on the 28th.

May 29th: Nets open 05-13, netmeter hours approx. 2600. Ringed: Redwing 2, Fieldfare 4, Willow Warbler 2, Chiffchaff 1, Spotted Flycatcher 1, Common Starling 2, House Sparrow 2, Lesser Redpoll 1. Total = 15. The night was a bit cooled with around 12 degrees, and the moth traps produced 20 species. Among them were our first record of Mottled Pug (Eupithecia exiguata).

Haavard Husebö and Alf Tore Mjös

Revtangen BO May 27-29th