Magnus Hellström

Ottenby Bird Observatory warden, bird enthusiast, bird ringer, bird migration addict, bird tour leader, @OttenbyBO

[Magnus Hellström @MHMstenura]

Moving…

[Magnus Hellström @MHMstenura]

Another one for those of you interested in the European occurrence of Yellow-browed Warblers:

https://t.co/av0bgKS80u

[Magnus Hellström @MHMstenura]

Join us next year!

[Ottenby Bird Observatory @OttenbyBO]

Looking forward to working with you! https://t.co/0fHNM4QGRw

[Joe Wynn @joewynn_birds]

🚨PhD ALERT! 🚨 We are looking for a highly motivated student to use 🧬 genomic approaches 🧬 to unravel the mysteries of migration using yellow-browed warblers. Think this is you or someone you know? Then come to our Q&A session at on 02/12 and check out the ad below!

[Ottenby Bird Observatory @OttenbyBO]

A beautiful adult male Ring Ouzel from this morning. The abberant white feathers in the head is caused by some kind of melanin deficiency in the bird. #birdmigration #birdringing #birdbanding #autumnmigration #ottenby #birds

[Spurn Bird Observatory @spurnbirdobs]

Congratulations to @PortlandBirdObs - a great hit on their #motuswts system of a Dutch tagged Yellow-browed Warbler. Excellent detail on its movements & timings.

[Magnus Hellström @MHMstenura]

@AksuLehikoinen @TimsBirding @harris_sjh @spurnbirdobs These birds are so small that any difference in PC shape is hard to spot. However, there is an average difference in the quality in juvenile vs adult PC that may be helpful. Kind of as in Goldcrests. But the carachters mentioned by Tim above is usually much more reliable.

[Ottenby Bird Observatory @OttenbyBO]

During the last few days four Pallas's Leaf Warblers have been ringed, and a fifth (unringed) one is still hanging around in the lighthouse garden.
#ottenby #birdringing #birdbanding #birdmigration

[Koen Stork @KoenStork]

What an amazing beast! Dark-sided flycatcher, present for its second day at Meijendel, The Netherlands. 1st for NL and 3rd for WP.

[Magnus Hellström @MHMstenura]

Interesting results from an analysis of ten (variably) odd Lesser Whitethroats from @OttenbyBO. Quite a goodie bag.

[Ottenby Bird Observatory @OttenbyBO]

Results from a recent DNA-analysis of some odd Lesser Whitethroats from the last years was just returned. The star bird - a dark and heavy billed C. c. althaea - represents the third record for Europe! #ottenby #birdringing #birdbanding #birdmigration

[Magnus Hellström @MHMstenura]

@nomadbirder Nice one. I agree the upperparts gives an eastern impression, though difficult to judge tail pattern and wing formula here. Given the variation we see within nominate I think we still need to be very careful with field records... But yes, would be a good bird to sample.

[Magnus Hellström @MHMstenura]

@SteveOnHilbre @OttenbyBO Great to meet you too, thanks for the visit! Yes, very likely a Mink. They are a plague along our coastlines…

[Paul Dufour @PaulDufour80]

If, like me, you find it fascinating that small migratory birds reach altitudes of 5,000 or 6,000m when crossing ecological barriers, check out our new preprint. We equipped 16 nocturnal migratory species with multi-sensor loggers to study their migration: https://t.co/ZygJlXD7iQ

[Magnus Hellström @MHMstenura]

@PhilWoollen @Stewchat It actually has a lot to do with how they are caught. Using walk-in traps has the advantage of not inducing the cramp; not while in the cages and not during the subsequent handling. Mistnetting takes the bird through another physiological path due to exertion/stress.

[Magnus Hellström @MHMstenura]

@PhilWoollen @Stewchat Not shocking at all. By using walk-in traps and hard bottom bird bags, the waders at Ottenby does not develop stress myopathy during the handling. Stress myopathy seems to be more frequent when trapped in nets and when soft fabric birdbags are used.

[Ottenby Bird Observatory @OttenbyBO]

It's been a nice wader summer here at Ottenby, and >5000 have been ringed. Most adult birds have passed by now, and the juveniles are taking over - like this beautiful Broad-billed Sandpiper. #birdmigration #birdringing #birdbanding #autumnmigration #ottenby

[Tianhao Zhao @johnsas_k]

First PhD chapter officially online! Getting nerdy about Siberian Rubythroat's migration pattern with thr up-do-date technology😎🐦🐦Recognize the Central Asia Flyway!

https://t.co/kt6Bznn8ST

[Ottenby Bird Observatory @OttenbyBO]

Ottenby's fourth ringed Pectoral Sandpiper walked into one of our traps during the evening. #birdmigration #birdringing #birdbanding #autumnmigration #ottenby

[Ottenby Bird Observatory @OttenbyBO]

A barely fleged, beautiful and rather aberrant Icterine Warbler (Hippolais icterina). Such odd yellow plumage is usually caused by a melanin deficiency in the bird.

#birdringing #birdbanding

[Magnus Hellström @MHMstenura]

@BirdingBeijing Thank you @BirdingBeijing, well done!