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Small influx of whitethroats and one interesting phyloscopus

tirsdag 16. maj 2023
New arrivals of Common and Lesser Whitethroats (Tornsanger and Gærdesanger)
af Robert Luttik

The wind shifted from east to west with the result of a few new arrivals. We caught 8 new Common whitehroats (Tonsanger) and 7 new Lesser Whitethroats (Gærdsanger). In total we had 33 birds and this makes it one of the best days of the week (29 new ones  and 4 recapturs, see table).

 16mei2023

Joakim caught a phyloscopus that was a bit strange and needed some special attention. It was a rather large one (wing length 71) and P6 was not emarginated which points to a Willow Warbler (Løvsanger). But the wing formula was a bit strange. I have made a copy of the wing formula presented in the "Identification Guide to Birds in the Hand". This gives you an impression of what it normally should be. And a picture is presented with what we saw.

wf guidelinewf phyloscopus

Normally P6 is a little bit shorter than P2. In our bird the P6 is larger than P2 and P2 is approximately as long as P7. See pictures below of the bird. For the time being the bird goes in the database as a Willow Warbler. We have material for a DNA test, but in the group of Willow Warblers this is not particular helpfull in separating the subspecies. In case you have an other idea please contact us.

acre phy2

 

acre2

 

We caught about 30 moths (15 species). There were 6 new ones for the season, amongst others the Eyed Hawk Moth (Aftenpafugleøje), but the picture was not good enough for the blog, have to wait for the next one. 

moth 16mei2023

I have choosen to show the Flame Shoulder Moth (Hvidrandet Jordugle) and the Early Thorn (Almindige Månemåler).

Flame shoulder

herculesje

Lets hope tomorrow will be the same as today,

Joakim and Robert