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Migrant bird population declines, an African perspective
http://safari-ecology.blogspot.fr/2012/03/migrant-bird-population-declines.html This web site gives us some real insight into the migratory habits of birds in Africa. Please follow the links too. We are fascinated in Wheatears as they like the Bar-tailed Godwit they breed in the Arctic and yet make a remarkable straight great circle flight alone to their wintering grounds in Africa. It is wonderful to have…
Adaptation and Evolution of Bird Migration
In this paper you find a rather fascinating overview of the migration of Birds. Malik, Y. S., Arun Prince Milton, A., Ghatak, S. & Ghosh, S. 2021 Adaptation and Evolution of Bird Migration. In Role of Birds in Transmitting Zoonotic Pathogens, pp. 3-14. Singapore Springer Singapore. Malik 2021
Do you have a sense of direction?
There is a lot of work going on in the navigation field. All the researchers in this field are now clear that navigation takes place in the sub-conscious. I made the mistake of thinking that native peoples who seemed to navigate perfectly without any aids could tell me how they did it, but language is…
Does the geomagnetic field intensity affect the flight path of homing pigeons?
Analysis of GPS recorded tracks of intact trigeminal sectioned pigeons. Conditioning studies have shown that the ophthalmic branch of the trigeminal nerve is functionally involved in the perception of the geomagnetic field intensity. However, homing experiments conducted in the field with homing pigeons demonstrated that trigeminal mediation of magnetoreception is neither necessary nor sufficient for…
Swallows
Useful links wikipedia.org/wiki/Swallow birdsofbritain.co.uk/bird-guide/swallow.asp Below is the of the swallow migration map: www.bbc.co.uk/blogs/autumnwatch/2009/11/lates… We, in Europe, measure the beginning of Spring by the arrival of the swallows. Many swallows make a 6,000 mile journey from Europe to winter in South Africa and back. I believe, that the way that swallows make this migration is by…
Avian navigation
Intro This piece has been forwarded to me by one of our editors: Simon Raggett. He gives us the quantum twist. You will also find much written here on the subject of avian navigation based around gravity from our editor Antonio Nafarrate, who has been in communication with the authors of this piece. Please follow…
