This paper is fascinating. This site has always been sceptical about Magnetoreception – the magnetic navigation story for the same reasons that are discussed here. No-one has found the magnetic receptors. the cryptochrome story requires conditions in the eye that are not conducive to quantum effects and knowing where North is does not help without a map showing where you are and where you are going so giving you the required bearing for navigation.
At RIN11 Ingo Schiffner gave his presentation Mathematical Analysis of Pigeon Tracks (the characterisation of the underlying navigational process). He analysed 167 tracks with birds navigating from four different locations and from two different directions. His theory is that pigeons navigate using at least four different components and these components change over the course of…
http://www.2physics.com/2012/10/avian-compass-reloaded.html Please find this interesting piece entitled The Avian Compass Reloaded by Dagomir Kaszlikowski at the Centre for Quantum Technologies, Department of Physics, National University of Singapore. Kaszlikowski talks about the the quantum effect that is required to enable the Cryptochromes in the eye of the European Robin to be sensitive to the earth’s magnetic field….
There has been a recent article in the New Scientist 9 August 2014 entitled: “Songbirds really do fly south for the winter” Scientists had postulated that intercontinental migratory songbirds flew north for the summer to breed in order to escape overcrowding and intense competition in the tropics. Most of us had always though that the…
We know that cuckoos nest over winter in the Congo and breed in Europe. UK cuckoos arrive in the latter part of April and lay their eggs in another bird’s nest. The common host of cuckoos are Reed warblers, Meadow pipits and even non-migratory Robins. The juveniles a month later in May. The fledgling casts out the other…
Questions by Richard Nissen. Replies by David Higgins – President of the Royal Pigeon Racing Association. If pigeons are not trained do pigeons roam far from their lofts? Probably no more than a mile. Do you think that homing into the loft when it is near by is done using geographical features such as roads…
In January 2021 I had the opportunity to have another test of my theory that migratory animals (fledgling cuckoos) use an innate sense of direction to find their way to their destination. I did a zoom presentation to some of the best dowsers in Britain and asked them to track the routes followed by fledgling…