Full Width [alt+shift+f] Shortcuts [alt+shift+k] TRY SIMPLE MODE
Sign Up [alt+shift+s] Log In [alt+shift+l]
27
This blog has two aims – to share some of the important scientific and conservation stories that are being revealed through shorebird tracking work and to encourage scientists to make their data available via the Global Wader platform. If small numbers of waders are going to be required to carry tracking devices, then it can … Continue reading Making full use of tracking data
3 months ago

Improve your reading experience

Logged in users get linked directly to articles resulting in a better reading experience. Please login for free, it takes less than 1 minute.

More from wadertales

Is inbreeding a problem for England’s Black-tailed Godwits?

The current English breeding population of limosa Black-tailed Godwits is relatively new, arising from a recolonisation in the 1950s that is presumed to have involved Dutch-hatched individuals. Given that the number of breeding birds is small and that there has been a head-starting project to boost the number of locally-raised youngsters for the last few … Continue reading Is inbreeding a problem for England’s Black-tailed Godwits?

3 months ago 20 votes
Iceland’s waders in decline

It is estimated that 1.5 million pairs of waders breed in Iceland, most of which spend the winter in West Europe and West Africa. There is a lot of guesswork associated with this number and little national monitoring information to assess whether species are doing well or badly. In this context, a 2025 paper in … Continue reading Iceland’s waders in decline

5 months ago 48 votes
The call of the Whimbrel

The seven-note whistle of the Whimbrel is a classic sound, welcomed by Icelanders at the end of a long, dark winter. These wonderful waders are responding badly to recent changes to Iceland’s landscape, such as the ever-expanding areas of non-native forestry and power infrastructure. Conservation of the species may be supported by reserving areas for … Continue reading The call of the Whimbrel

6 months ago 55 votes
How are migration sites connected?

Which are the most important migration sites and how are breeding, moulting, staging and wintering locations linked? Forty-four authors have collaborated to bring together ringing, colour-ringing and GPS tracking data in a paper entitled Site-level connectivity identified from multiple sources of movement data to inform conservation of a migratory bird. The analysed data relate to … Continue reading How are migration sites connected?

7 months ago 128 votes

More in science

Brief items - Static electricity, quantum geometry, Hubbard model, + news

It's been a busy time that has cut into my blogging, but I wanted to point out some links from the past couple of weeks. Physics Today has a cover article this past issue about what is colloquially known as static electricity, but what is more technically described as triboelectricity, the transfer of charge between materials by rubbing.  I just wrote about this six months ago, and the detailed mechanisms remain poorly understood.  Large surface charge densities (like \(10^{12}\) electronic charges per square cm) can be created this way on insulators, leading to potential differences large enough to jump a spark from your finger to the door handle.  This can also lead to static electric fields near surfaces that are not small and can reveal local variations in material properties. That leads right into this paper (which I learned about from here) about the extreme shapes of the heads of a family of insects called treehoppers.  These little crawlies have head and body shapes that often have cuspy, pointy bits that stick out - spines, horns, etc.  As we learn early on about electrostatics, elongated and pointy shapes tend to lead to large local electric fields and field gradients.  The argument of this paper is that the spiky body and cranial morphology can help these insects better sense electric field distributions, and this makes it easier for them to find their way and avoid predators.  This manuscript on the arXiv this week is a particularly nice, pedagogical review article (formatted for Rev Mod Phys) about quantum geometry and Berry curvature in condensed matter systems.  I haven't had the chance to read it through, but I think this will end up being very impactful and a true resource for students to learn about these topics. Another very pretty recent preprint is this one, which examines the electronic phase diagram of twisted bilayers of WSe2, with a relative twist angle of 4.6°.  Much attention has been paid to the idea that moiré lattices can be in a regime seemingly well described by a Hubbard-like model, with an on-site Coulomb repulsion energy \(U\) and an electronic bandwidth \(W\).  This paper shows an exceptionally clean example of this, where disorder seems to be very weak, electron temperatures are quite cold, and phase diagrams are revealed that look remarkably like the phenomena seen in the cuprate superconductors (superconducting "domes" as a function of charge density adjacent to antiferromagnetic insulating states, and with "strange metal" linear-in-\(T\) resistance in the normal state near the superconducting charge density).  Results like this make me more optimistic about overcoming some of the major challenges in using twisted van der Waals materials as simulators of hard-to-solve hamilitonians. I was all set to post this earlier today, with no awful news for once about science in the US that I felt compelled to discuss, but I got sidetracked by real work.  Then, late this afternoon, this executive order about federal grants was released.   I can't sugar coat it - it's awful.  Ignoring a large volume of inflammatory rhetoric, it contains this gem, for instance:  "The grant review process itself also undermines the interests of American taxpayers."   It essentially tries to bar any new calls for proposals until a new (and problematic) process is put in place at every agency (see Sect. 3(c)).  Also, it says "All else being equal, preference for discretionary awards should be given to institutions with lower indirect cost rates."  Now, indirect cost rates are set by negotiations between institutions and the government.   Places that only do very small volumes of research have low rates, so get ready for MIT to get fewer grants and Slippery Rock University to get more.  The only certainty is that the nation's lawyers are going to have a field day with all the suits that will come out of this.

15 hours ago 4 votes
A 1-Day Virtual Symposium on Future of Astronomy

For those of you with a deeper interest in astronomy and how we learn about the universe, this may be of interest.  There is a good discount if you register before Aug. 10. The Astronomical Society of the Pacific Presents: Eyes on the Cosmos: Cutting Edge Instruments and Ideas in Astronomy On Zoom, August 21, […] The post A 1-Day Virtual Symposium on Future of Astronomy appeared first on Andrew Fraknoi - Astronomy Lectures - Astronomy Education Resources.

10 hours ago 3 votes
As Fire Season Ramps Up, Thousands of U.S. Firefighting Positions Are Vacant

Every spring, Forest Service fire leaders meet to plan for the upcoming fire season. This year, some employees were shocked by the blunt remarks made during a meeting with forest supervisors and fire staff officers from across the Intermountain West. “We were told, ‘Help is not on the way,’” said one employee, who asked to remain anonymous for fear of losing their job. “I’ve never been told that before.”  Read more on E360 →

6 hours ago 2 votes
‘It’s a Mess’: A Brain-Bending Trip to Quantum Theory’s 100th Birthday Party

Hundreds of physicists (and a few journalists) journeyed to Helgoland, the birthplace of quantum mechanics, and grappled with what they have and haven’t learned about reality. The post ‘It’s a Mess’: A Brain-Bending Trip to Quantum Theory’s 100th Birthday Party first appeared on Quanta Magazine

an hour ago 1 votes