The coot in the front turned its head just enough so it can see how close the aggressive birds is. Copyright Mia McPherson | All Rights Reserved. This content is available for download via your institution's subscription. Trends in literature describe coots as highly aggressive toward other coots year-round and toward other bird species during the breeding season. You will have access to both the presentation and article (if available). Thanks Mia. Coots, though they are considered social and sometimes live in large groups, are very aggressive towards others of their own kind. One American Coot chasing another coot – Nikon D500, f7.1, 1/1000, ISO 250, Nikkor 500mm VR with 1.4x TC, natural light. At the end the coot that had been chased displayed its under tail coverts, lowered its head and arched its wings over its body as the aggressive coot turned its body and swam off in the other direction. American Coot about to overtake the other coot – Nikon D500, f7.1, 1/1000, ISO 250, Nikkor 500mm VR with 1.4x TC, natural light. The American Coot being chased must have decided to take evasive action at this point because it turned sharply and headed to the south. Aggressive Behavior will consider manuscripts concerning the fields of Animal Behavior, Anthropology, Ethology, Psychiatry, Psychobiology, Psychology, and Sociology which relate to either overt or implied conflict behaviors. This aggressive behavior is sometimes called “splattering” but most people just prefer to say chase, I prefer chase because it is easier to say. Such a pretty bird. Understanding interspecific and intraspecific aggression is important for wildlife management and sustainability of populations. Aggressive behavior is behavior that causes physical or emotional harm to others, or threatens to. Beyond that, there are a couple of images here I really appreciate: particularly, that last photo. American Coot being chased past me – Nikon D500, f7.1, 1/1000, ISO 250, Nikkor 500mm VR with 1.4x TC, natural light. You currently do not have any folders to save your paper to! I’ve never seen a tail raised like that, and now I’ll know to look for it when I’m out and about. It’s good…, Outstanding photographs! One American Coot turns during the chase – Nikon D500, f7.1, 1/1000, ISO 250, Nikkor 500mm VR with 1.4x TC, natural light. There were more instances of intraspecific aggressive encounters than interspecific aggressive encounters, which indicate the interacting species at Ballona are not competing for resources and their respective niches may not overlap. I've seen a few Rough-legged Hawks but have never been…, Gnatcatchers, Kinglets, Dippers and Others, Mockingbirds, Thrashers, Catbirds, Starlings and Pipits, Waxwings, Longspurs and Silky-Flycatchers. American crows, black-billed magpies and Forster's tern can sometime take eggs. I was lucky enough to capture a series of chase photos once, so I know how difficult it can be to get these photos. Translations are not retained in our system. Beautiful bird ain't it? American Coots displaying under tail coverts – Nikon D500, f7.1, 1/1250, ISO 250, Nikkor 500mm VR with 1.4x TC, natural light. Submit your email address below and it will happen! Thank you. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website. Following the coots with my lens and keeping them in focus is not an easy task, they are moving fast when chases occur. I heard splashing and the sound of feet running across the water and turned my lens toward the sounds then locked my focus on one the the running coots and started firing away. The coot on the left side of the frame is gaining on the coot it is chasing in this photo, the coot in the front just wants to get away from it as fast as it can. We found a significant difference between the number of occurrences of interspecific and intraspecific aggression based on four behaviors specific for American coots: charging, paired display, splattering, and churning. Aggressive behaviors in the American coot 23. Please do not share my images on Pinterest, Tumblr or other image sharing sites. And the coot is even closer in this frame. This is such a wonderful series. Post was not sent - check your email addresses! I certainly didn’t do so well! Real fast. Then the coot being chased put the brakes on spraying water out behind its body. That coot is almost close enough to use its feet or bill on the coot in the front in this frame. But there are times I get lucky and can have both birds in the frame as the aggressor gets closer to the interloper. Under Tail-Coverts – used as a “social releaser” being raised and expanded to increase amount of white displayed; These communicative behaviors as described on Birds of North America Online (BNA): Body Posture – head and neck erect indicates amiable intentions while a head-lowered/extended posture characterizes aggressiveness and a bowed head is basis of courtship and mating displays; The other day when I photographed Common Mergansers and Pied-billed Grebes at Farmington Bay I was also able to photograph some American Coots that were nearby. American Coot with water droplets flying – Nikon D500, f7.1, 1/1000, ISO 250, Nikkor 500mm VR with 1.4x TC, natural light. Your work is delightful and informative. End of an American Coot chase – Nikon D500, f7.1, 1/1000, ISO 250, Nikkor 500mm VR with 1.4x TC, natural light. Coots communicate distress to each other by exposing their undertail coverts or displaying a swollen shield when alarmed by potential dangers such as hawks, airplanes, or predatory mammals. Fights are very common and they frequently drown each other, though I don't think it's intentional. And the chase was on. It can range from verbal abuse to the destruction of a victim Oh what a treat - for you, and for us. I like the tail shot with the feathers…. The aggressor chases after the coot that has encroached on its territory. V olume 87, Number 1, 2016. study on aggression in South Carolinian ducks (Alexander, 1987). These images are posted in the order that they were taken in. Coots displayed more instances of intraspecific aggressive behavior than interspecific aggressive behavior, suggesting that the niches are not overlapping with mallard ducks (see how intra- and interspecific aggression indicates niche overlap in Korsu et al., 2008). American Coots are quarrelsome birds and they are quick to give chase whether it is over food or territory and they will fight, sometimes even to death, for both. Because we conducted observations outside the breeding season, we hypothesized that more instances of intraspecific aggression would be observed. Of course I can’t know what either coot was thinking so I am only speculating on why the chase ended here and didn’t continue on to an actual physical fight.
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