When climate change affects where birds sing
Recent changes in temperature and precipitation have implications for transmission and excess attenuation of sounds, with important consequences for the choice of vocal display sites by animals. Birds typically sing from within or at the top of the vegetation, and the relative height of such song posts varies consistently among species. I estimated relative height of positions in the vegetation used by singing birds in 1986--1989 and again in 2010 after spring and summer temperatures had increased by 20% and precipitation by 30%, predicting that these changes would increase the height of song post positions. Average song post height increased by 18% or 1.2 m during the study. Because the increase in song post height should depend on relative costs and benefits of such change, I predicted that sexually dichromatic species and species with increasing populations and hence intense intraspecific competition for mates should cause increases in song post height, whereas high predation risk by the sparrowhawk Accipiter nisus should prevent increases in song post height because sparrowhawks preferentially prey on birds high in the vegetation. That was indeed the case. These results suggest that display sites for singing birds can change rapidly, with potential consequences for optimal design of songs, variance in mating success, and predator--prey interactions. Copyright 2011, Oxford University Press.
If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
Volume (Year): 22 (2011)
Issue (Month): 1 ()
|Contact details of provider:|| Postal: Oxford University Press, Great Clarendon Street, Oxford OX2 6DP, UK|
Fax: 01865 267 985
Web page: http://beheco.oxfordjournals.org/
|Order Information:||Web: http://www.oup.co.uk/journals|
When requesting a correction, please mention this item's handle: RePEc:oup:beheco:v:22:y:2011:i:1:p:212-217. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Oxford University Press)or (Christopher F. Baum)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.