These sound like Greater White-fronteds, perhaps some feral Anser geese that are non-native. They are definitely not Cackling Geese.
Dave Irons Beaverton, OR Sent from my iPhone On Oct 2, 2019, at 6:24 PM, Wim van Dam <wim.van....@gmail.com<mailto:wim.van....@gmail.com>> wrote: Last Saturday night (2019-09-28, at about 1AM) I recorded several flocks of geese flying over my backyard in Solvang, California (USA). I would expect these to be Canada Goose, but they don't sound right for that (too high, no honking). So now I'm wondering if these are in fact Cackling Goose, which would be interesting given the size of the flock. Here is my best recording: https://www.xeno-canto.org/500506 Does anybody have any suggestions what these are, and why? Probably (hopefully) we have to get to the subspecies level to sort this out. The original .WAV file is 7MB and I'll be happy to email it to those interested. Thanks Wim van Dam Solvang, CA (USA) -- NFC-L List Info: Welcome and Basics<http://www.northeastbirding.com/NFC_WELCOME> Rules and Information<http://www.northeastbirding.com/NFC_RULES> Subscribe, Configuration and Leave<http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm> Archives: The Mail Archive<http://firstname.lastname@example.org/maillist.html> Surfbirds<http://www.surfbirds.com/birdingmail/Group/NFC-L> Birding.ABA.Org<http://birding.aba.org/maillist/NFC> Please submit your observations to eBird<http://ebird.org/content/ebird/>! -- -- NFC-L List Info: Welcome and Basics � http://www.northeastbirding.com/NFC_WELCOME Rules and Information � http://www.northeastbirding.com/NFC_RULES Subscribe, Configuration and Leave � http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm Archives: The Mail Archive � http://email@example.com/maillist.html Surfbirds � http://www.surfbirds.com/birdingmail/Group/NFC-L Birding.ABA.Org � http://birding.aba.org/maillist/NFC Please submit your observations to eBird! ��http://ebird.org/content/ebird/ --