tag:blogger.com,1999:blog-4854917240637353068.post8854948890830387984..comments2024-02-21T10:36:51.773+00:00Comments on Axe Birding: Cold Weather Movement or Spring Passage?Steve Waitehttp://www.blogger.com/profile/02234938942274343663noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-4854917240637353068.post-9048741095753643052018-03-08T18:47:43.963+00:002018-03-08T18:47:43.963+00:00Hi Ric, that's really interesting. I knew abou...Hi Ric, that's really interesting. I knew about the day light hours stuff, but never the smell thing! Still have Avocets here today, a full week after they first turned up. Best wishes, Steve.Steve Waitehttps://www.blogger.com/profile/02234938942274343663noreply@blogger.comtag:blogger.com,1999:blog-4854917240637353068.post-64290529278432364302018-03-07T06:45:42.372+00:002018-03-07T06:45:42.372+00:00Steve, my observations on migration patterns indic...Steve, my observations on migration patterns indicate that the spring passage is triggered by a combination of day length and the birds sense of smell.<br />The bird waits as the head wind brings the 'breeding grounds ready' message to it, and when the wind changes to a favourable direction for travel, it takes off.<br />The irony is that when actually migrating, the bird at times cannot follow the scent trail, and simply relies on an internal flight time clock.<br /> Possibly the source of over shoots.Richttps://www.blogger.com/profile/02714117508358025668noreply@blogger.comtag:blogger.com,1999:blog-4854917240637353068.post-2764684597130679742018-03-06T20:59:49.363+00:002018-03-06T20:59:49.363+00:00I guess it doesn't really matter, but just an ...I guess it doesn't really matter, but just an interesting question. A cold weather movement is basically a movement forced, whereas spring passage is built into the birds brain I guess. I think it was a mixture of the two but yes there's no way of ever knowing for sure...Steve Waitehttps://www.blogger.com/profile/02234938942274343663noreply@blogger.comtag:blogger.com,1999:blog-4854917240637353068.post-21710865092047826452018-03-06T18:30:17.018+00:002018-03-06T18:30:17.018+00:00Interesting blog Steve. I posted the same question...Interesting blog Steve. I posted the same question last week on Bird Forum but got no replies. My question came out of my own ignorance "How do I separate cold weather movement and early migration" indeed, does it matter? Movement is movement or is cold weather movement short term and reversible? Is that correct?John Bronzehttps://www.blogger.com/profile/13376788141924586714noreply@blogger.com