<div dir="ltr">This behavior might be 'new' to these researchers, who studied it in detail. But instances of these 'battles to the death' have been posted to both Tweeters and OBOL over the years. And it can be found simply by Googling this subject on the internet. Anna's have been the 'usual suspects' in the West.<div>Bob OBrien Portland</div><div>.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Nov 10, 2023 at 7:39 AM Dan Reiff <<a href="mailto:dan.owl.reiff@gmail.com">dan.owl.reiff@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
<a href="https://phys.org/news/2014-11-male-hummingbirds-beaks-stab-opponents.html" rel="noreferrer" target="_blank">https://phys.org/news/2014-11-male-hummingbirds-beaks-stab-opponents.html</a><br>
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