Mentioned on the eBird news feed recently, there is a new paper about migration timing across various species. Anyone interested in how different species might respond to a warm spring might want to check it out. Hurlbert AH, Liang Z (2012) Spatiotemporal Variation in Avian Migration Phenology: Citizen Science Reveals Effects of Climate Change. PLoS ONE 7(2): e31662 http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0031662 (open access) "Across all species and geographic locations, species shifted arrival dates 0.8 days earlier for every °C of warming of spring temperature, but it was common for some species in some locations to shift as much as 3–6 days earlier per °C. Species that advanced arrival dates the earliest in response to warming were those that migrate more slowly, short distance migrants, and species with broader climatic niches." So to me this means birds like sparrows and warblers that can respond to more local/regional weather patterns may arrive earlier than normal, but long-distance migrants such as bobolinks should tend to arrive around the usual dates. In any case, there should be lots of plump caterpillar worms to eat when the warblers do show up! Had our first Field Sparrow here in Ashtabula County this morning. No ruby-throats yet, but the feeders are up. =) Sean Artman Rock Creek, Ohio ______________________________________________________________________ Ohio-birds mailing list, a service of the Ohio Ornithological Society. Our thanks to Miami University for hosting this mailing list. Additional discussions can be found in our forums, at www.ohiobirds.org/forum/. You can join or leave the list, or change your options, at: http://listserv.muohio.edu/scripts/wa.exe?LIST=OHIO-BIRDS Send questions or comments about the list to: [log in to unmask]