Talk:Bird migration

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WikiProject Birds To-do: edit MAJOR taxonomic overhaul (see here) Create Galloanserae For new cat: Category:Natural history of the Americas, replace "Hummingbird" article (by Some collaboration, hopefully) an artcle: along title LINE of: Hummingbirds--the bird of the Americas

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My addition just now of a section on migration of birds in Australasia is a little unbalanced in the sense (a) that it should be a relatively minor footnote to a longer article, and (b) in that I haven't covered seabirds at all (and they are big-league migrators) and barely mentioned the wading birds that do the long haul to the Arctic Circle and back every year; and (c) that I haven't tried to say anything about S Africa or S America (lacking the expertise). I'll try to remember to do something about (b) at some stage. Hopefully someone else can address (a) and (c). Tannin 12:50 Mar 27, 2003 (UTC)

I agree that the article is incomplete, especially for the seabirds and waders, but having kept mentioning migration, I felt the article needed starting. I also need to mention the reverse migration of Great and Sooty shearwaters.

From my limited experience of Africa, apart from the wintering Palaearctic migrants, movement tends to be shorter distance and in response to the wet/dry seasons. However, I certainly wouldn't claim any great expertise. I guess S America is much the same, but that is a guess. jimfbleak 16:28 Mar 27, 2003 (UTC)

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To satisfy my own curiosity, I'd be grateful for the source (or any refence, for:

Short distance passerine migrants have two evolutionary origins. Those which have long distance migrants in the same family, like the Chiffchaff, are species of southern hemisphere origins which have progressively shortened their return migration so that they stay in the northern hemisphere.

Those species which have no long distance migratory relative, like the waxwings, are effectively moving in response to winter weather, rather than enhanced breeding opportunities.

Thank you. Andy Mabbett 18:53, 27 Dec 2003 (UTC)

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I'm sure you've seen by now the response on the other mailing list, but for the beneefit of others it's the Dec 2003 British Birds. Jim

Contents 1 Navigation 2 category 3 Animal migration 4 New UoA study on bird migration

[edit] Navigation

I feel while this article has some excellent information about different forms of bird migration, it is sorely lacking information concerning (at least speculated) navigational techniques. Rmrfstar 15:48, 15 May 2005 (UTC)

Feel free to add an appropriate section jimfbleak 07:03, 26 August 2005 (UTC)

I found some recent research on polarized light patterns of sunset and sunrise helping birds navigate. See http://www.sciencedaily.com/releases/2006/08/060810213154.htm "Light Guides Flight of Migratory Birds" on ScienceDaily's Bird News at http://www.sciencedaily.com/news/plants_animals/birds/. There were also research articles on the longest bird migration ever recorded (discovered a few days ago about the sooty shearwater bird) at http://www.sciencedaily.com/releases/2006/08/060808232221.htm. I tried a rough draft to add this to the bird migration article, but I am just not that great a writer, so I left the writing alone. Michele123 14:21, 12 August 2006 (UTC) Maybe someone would like to give it a go. Or, if it is too much detail for the article, maybe add the link to ScienceDaily's bird news?

[edit] category

[[Category:Migratory Birds]] is pointless - wrongly capped, and potentially thousands of members, of which only 5 are actually linked. Unhelpful also because although long-distance is clearly intended, many birds are short-distance, nomadic or altitudinal migrants jimfbleak 07:03, 26 August 2005 (UTC)

I rolled-back Long Point, to avoid becoming a list. jimfbleak 05:08, 7 May 2006 (UTC)

I had added Long Point to the article. I thought it was worthy of mention, but I support Jimfbleak's rollback for the reason he stated (avoid it expanding into a list). --thirty-seven 05:10, 7 May 2006 (UTC)

[edit] Animal migration

Why does animal migration redirect here? Birds aren't the only animals that migrate. Miss Madeline | Talk to Madeline 17:12, 16 October 2006 (UTC)

[edit] New UoA study on bird migration

Hi! I found an interesting 2007-03-01 piece on short-distance bird migration. I have no serious background in biology so didn't want to peddle with the article directly.

(unprocessed) A universal assumption about bird migration has been that short-distance migration is an evolutionary stepping stone to long-distance migration. The team's work contradicts that idea by showing that short-distance migrants are inherently different from their globe-trotting cousins: the pressure to migrate comes from seasonal food scarcity.

http://www.eurekalert.org/pub_releases/2007-03/uoa-wdb030107.php

Thanks, Rdavout 18:39, 5 March 2007 (UTC)