You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <recentchanges rccontinue="20160203211944|3155" />
  </query-continue>
  <query>
    <recentchanges>
      <rc type="edit" ns="0" title="Wolves of River Twine Holt" pageid="11" revid="3162" old_revid="3160" rcid="3165" timestamp="2016-02-17T02:33:30Z" />
      <rc type="log" ns="6" title="File:Thumb wolfpix Howler.jpg" pageid="1206" revid="0" old_revid="0" rcid="3164" timestamp="2016-02-17T02:32:08Z" />
      <rc type="edit" ns="0" title="Wolves of River Twine Holt" pageid="11" revid="3160" old_revid="3159" rcid="3163" timestamp="2016-02-17T02:31:51Z" />
      <rc type="edit" ns="0" title="Wolves of River Twine Holt" pageid="11" revid="3159" old_revid="3157" rcid="3162" timestamp="2016-02-14T20:13:41Z" />
      <rc type="log" ns="6" title="File:Thumb wolfpix turnstone.jpg" pageid="1205" revid="0" old_revid="0" rcid="3161" timestamp="2016-02-14T20:13:06Z" />
      <rc type="edit" ns="0" title="Wolves of River Twine Holt" pageid="11" revid="3157" old_revid="3156" rcid="3160" timestamp="2016-02-14T20:12:53Z" />
      <rc type="edit" ns="0" title="Wolves of River Twine Holt" pageid="11" revid="3156" old_revid="3155" rcid="3159" timestamp="2016-02-14T20:08:12Z" />
      <rc type="edit" ns="0" title="Wolves of River Twine Holt" pageid="11" revid="3155" old_revid="3151" rcid="3158" timestamp="2016-02-03T21:29:34Z" />
      <rc type="edit" ns="0" title="Litters from 2500 - present" pageid="849" revid="3154" old_revid="2779" rcid="3157" timestamp="2016-02-03T21:23:44Z" />
      <rc type="log" ns="6" title="File:Thumb wolfpix foxnose.jpg" pageid="1204" revid="0" old_revid="0" rcid="3156" timestamp="2016-02-03T21:19:57Z" />
    </recentchanges>
  </query>
</api>