Date: 8/6/25 11:51 am From: wagtail1997 via groups.io <orcorba...> Subject: [CALBIRDS] Pied-billed Grebe sinking behavior references?
Group,
Mason Regional Park (Irvine, Orange County, CA) has a high density of Pied-billed Grebes right now. At least 3 of the 14 are showing quick sinking behavior. I've studied that for the last two weeks and come up with videos on the behavior, analysis of the sinking, a summary of possible mechanisms, ecology, and more. All that is missing is to actually find a scientific paper on the behavior, even after doing some online searches for such studies. Anyone have a reference that I can add to my show notes? The Grebe's legs and feet have a role in the late stages of the sinking. The head behavior is interesting and lags the submersion of the rest of the body. I raise more questions than I can answer about the behavior. https://youtu.be/v95FQgHPxq8 Sent from my iPhone
Joel Weintraub
Irvine Ca
