<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Swift, K.</style></author><author><style face="normal" font="default" size="100%">Marzluff, J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Wild American crows gather around their dead to learn about danger</style></title><secondary-title><style face="normal" font="default" size="100%">Animal Behaviour</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">American crow</style></keyword><keyword><style  face="normal" font="default" size="100%">Columba livia</style></keyword><keyword><style  face="normal" font="default" size="100%">conditioned predator learning</style></keyword><keyword><style  face="normal" font="default" size="100%">Corvus brachyrhynchos</style></keyword><keyword><style  face="normal" font="default" size="100%">fear extinction</style></keyword><keyword><style  face="normal" font="default" size="100%">necrophobia</style></keyword><keyword><style  face="normal" font="default" size="100%">risk assessment</style></keyword><keyword><style  face="normal" font="default" size="100%">rock pigeon</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2015</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/2015</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S0003347215003188</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">109</style></volume><pages><style face="normal" font="default" size="100%">187-197</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;hr class=&quot;artHeader&quot; id=&quot;abs_authorabs00101&quot; style=&quot;font-family: Arial, Helvetica, &#039;Lucida Sans Unicode&#039;, &#039;Microsoft Sans Serif&#039;, &#039;Segoe UI Symbol&#039;, STIXGeneral, &#039;Cambria Math&#039;, &#039;Arial Unicode MS&#039;, sans-serif; border: 0px; height: 1px; margin: 16px 0px 12px; color: rgb(46, 46, 46); font-size: 16px; line-height: 23.68px; background: rgb(183, 183, 183);&quot; /&gt;
&lt;div class=&quot;abstract svAbstract &quot; data-etype=&quot;ab&quot; style=&quot;border: 0px; font-size: 16px; margin: 0px; padding: 0px; vertical-align: baseline; font-family: Arial, Helvetica, &#039;Lucida Sans Unicode&#039;, &#039;Microsoft Sans Serif&#039;, &#039;Segoe UI Symbol&#039;, STIXGeneral, &#039;Cambria Math&#039;, &#039;Arial Unicode MS&#039;, sans-serif; color: rgb(46, 46, 46); line-height: 23.68px;&quot;&gt;
&lt;p id=&quot;abspara0010&quot; style=&quot;border: 0px; margin-bottom: 9px; padding-bottom: 0px; vertical-align: baseline; font-family: Arial, Helvetica, &#039;Lucida Sans Unicode&#039;, &#039;Microsoft Sans Serif&#039;, &#039;Segoe UI Symbol&#039;, STIXGeneral, &#039;Cambria Math&#039;, &#039;Arial Unicode MS&#039;, sans-serif; word-spacing: -0.15ex;&quot;&gt;While a growing number of animals demonstrate avoidance of areas associated with conspecific death, the extent to which wild populations may use these experiences to learn about novel predators remains unclear. Here we demonstrate with experiments that wild American crows,&amp;nbsp;&lt;em style=&quot;border: 0px; margin: 0px; padding: 0px; vertical-align: baseline;&quot;&gt;Corvus brachyrhynchos&lt;/em&gt;, respond to dead conspecifics by mobbing, increasing the time to approach food in areas associated with these events, and learning new predators based on their proximity to dead crows and hawks. Avoidance of either dead conspecifics or areas associated with them is not shared by another urban bird, the rock pigeon,&amp;nbsp;&lt;em style=&quot;border: 0px; margin: 0px; padding: 0px; vertical-align: baseline;&quot;&gt;Columba livia&lt;/em&gt;. Crows mobbed and increased the time to approach food over the next 72&amp;nbsp;h after observing novel humans paired with a dead crow, a red-tailed hawk,&amp;nbsp;&lt;em style=&quot;border: 0px; margin: 0px; padding: 0px; vertical-align: baseline;&quot;&gt;Buteo jamaicensis&lt;/em&gt;, or a hawk with a dead crow. The sight of a dead pigeon did not elicit these responses. These findings suggest that, for crows, dead conspecifics, but not dead heterospecifics, represent a salient danger akin to the observation of a predator. On the day the stimulus was presented, the number of trials that resulted in mobbing and avoidance of the food was strongest when crows were presented a hawk with a dead crow. In addition, we demonstrate that crows use the proximity of a human to predators, to dead conspecifics and to predators with dead conspecifics as cues to learn to recognize and subsequently scold the associated human after only one training event, and that this association can last 6 weeks. Together, our results support previous findings that crows learn places associated with conspecific death, and further demonstrate that crows can learn and remember people who appear complicit in these events.&lt;/p&gt;
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