There's an interesting paper dealing with just this effect here: https://www.researchgate.net/publication/289706654_Warmer_Summers_and_Drier_Winters_Correlate_with_More_Winter_Vagrant_Purple_Gallinules_Porphyrio_martinicus_in_the_North_Atlantic_Region
Good Birding and Vagrant Speculating! -Doug Gochfeld On Tue, Feb 13, 2018 at 6:52 AM Shaibal Mitra <shaibal.mi...@csi.cuny.edu> wrote: > Wow, this is really amazing. The tight date range really looks like a > discrete flight of some sort. If these were Summer Tanagers hitting those > sites in mid April, we'd call it a slingshot. Is there any reason to think > that southern populations of Purple Gallinule are undertaking long distance > flights to the north in mid January? > > Shai Mitra > Bay Shore > ________________________________________ > From: bounce-122283698-11143...@list.cornell.edu [ > bounce-122283698-11143...@list.cornell.edu] on behalf of Paul R Sweet [ > sw...@amnh.org] > Sent: Monday, February 12, 2018 3:27 PM > To: NYSBIRDS-L > Subject: [nysbirds-l] Another Long Island Purple Gallinule (not chaseable) > > A routine trip to collect salvaged birds from a Long Island rehabber > yielded Long Island’s 3rd Purple Gallinule of the winter. This new specimen > was picked up on 14 January in Rockville Centre and died 2 days later > > As a reminder the other birds were 13 January Manorville, 16 January > Southampton. > > Details will be submitted to NYSARC > > Paul Sweet > Collection Manager > Department of Ornithology > American Museum of Natural History > Central Park West at 79th Street > New York, NY 10024 > > Tel: 212 769 5780 > Cell: 718 757 5941 > > -- > NYSbirds-L List Info: > Welcome and Basics<http://www.northeastbirding.com/NYSbirdsWELCOME.htm> > Rules and Information<http://www.northeastbirding.com/NYSbirdsRULES.htm> > Subscribe, Configuration and Leave< > http://www.northeastbirding.com/NYSbirdsSubscribeConfigurationLeave.htm> > Archives: > The Mail Archive< > http://www.mail-archive.com/nysbirds-l@cornell.edu/maillist.html> > Surfbirds<http://www.surfbirds.com/birdingmail/Group/NYSBirds-L> > ABA<http://birding.aba.org/maillist/NY01> > Please submit your observations to eBird<http://ebird.org/content/ebird/>! > -- > > -- > > NYSbirds-L List Info: > http://www.NortheastBirding.com/NYSbirdsWELCOME.htm > http://www.NortheastBirding.com/NYSbirdsRULES.htm > http://www.NortheastBirding.com/NYSbirdsSubscribeConfigurationLeave.htm > > ARCHIVES: > 1) http://www.mail-archive.com/nysbirds-l@cornell.edu/maillist.html > 2) http://www.surfbirds.com/birdingmail/Group/NYSBirds-L > 3) http://birding.aba.org/maillist/NY01 > > Please submit your observations to eBird: > http://ebird.org/content/ebird/ > > -- > > -- NYSbirds-L List Info: http://www.NortheastBirding.com/NYSbirdsWELCOME.htm http://www.NortheastBirding.com/NYSbirdsRULES.htm http://www.NortheastBirding.com/NYSbirdsSubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nysbirds-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NYSBirds-L 3) http://birding.aba.org/maillist/NY01 Please submit your observations to eBird: http://ebird.org/content/ebird/ --
