--- a/includes/admin.inc
+++ b/includes/admin.inc
@@ -1307,6 +1307,23 @@
     );
   }
 
+  if ($view->current_display != 'default') {
+    // Buttons for copying to a new display.
+    foreach (views_fetch_plugin_names('display', NULL, array($view->base_table)) as $type => $label) {
+      $element['copy_display'][$type] = array(
+        '#type' => 'submit',
+        '#value' => t('Copy to !display', array('!display' => $label)),
+        '#limit_validation_errors' => array(),
+        '#submit' => array('views_ui_edit_form_submit_copy_display', 'views_ui_edit_form_submit_delay_destination'),
+        '#attributes' => array('class' => array('copy-display')),
+        // Allow JavaScript to remove the 'Copy ' prefix from the button label when
+        // placing the button in a "Copy" dropdown menu.
+        '#process' => array_merge(array('views_ui_form_button_was_clicked'), element_info_property('submit', '#process', array())),
+        '#values' => array(t('Copy to !display', array('!display' => $label)), 'to ' . $label),
+      );
+    }
+  }
+
   return $element;
 }
 
@@ -1328,6 +1345,33 @@
 
   // Redirect to the new display's edit page.
   $form_state['redirect'] = 'admin/structure/views/view/' . $view->name . '/edit/' . $display_id;
+}
+
+/**
+ * Submit handler to copy a display in a view.
+ */
+function views_ui_edit_form_submit_copy_display($form, &$form_state) {
+  $view = $form_state['view'];
+  $old_display_id = $form_state['display_id'];
+  $old_display = $view->display[$old_display_id];
+
+  // Create the new display.
+  $parents = $form_state['triggering_element']['#parents'];
+  $new_display_type = array_pop($parents);
+  $new_display_id = $view->add_display($new_display_type);
+  $new_display = $view->display[$new_display_id];
+
+  $old_type = $old_display->display_plugin;
+  $options = $old_display->handler->option_definition();
+  $default_options = (new views_plugin_display())->option_definition();
+  $old_type_options = array_diff_key($options, $default_options);
+  $new_display->display_options = array_diff_key($old_display->display_options, $old_type_options);
+
+  $view->current_display = $new_display_id;
+  views_ui_cache_set($view);
+
+  // Redirect to the new display's edit page.
+  $form_state['redirect'] = 'admin/structure/views/view/' . $view->name . '/edit/' . $new_display_id;
 }
 
 /**
@@ -2241,6 +2285,12 @@
     'title' => t('Add'),
     'href' => "admin/structure/views/nojs/add-item/$view->name/$display->id/$type",
     'attributes'=> array('class' => array('icon compact add', 'views-ajax-link'), 'title' => t('Add'), 'id' => 'views-add-' . $type),
+    'html' => TRUE,
+  );
+  $actions['copy'] = array(
+    'title' => t('Copy to'),
+    'href' => "admin/structure/views/nojs/copy-item/$view->name/$display->id/$type",
+    'attributes'=> array('class' => array('icon compact add', 'views-ajax-link'), 'title' => t('Copy to'), 'id' => 'views-copy-' . $type),
     'html' => TRUE,
   );
   if ($count_handlers > 0) {

--- a/js/views-admin.js
+++ b/js/views-admin.js
@@ -233,7 +233,7 @@
   var $displayButtons = $menu.nextAll('input.add-display').detach();
   $displayButtons.appendTo($addDisplayDropdown.find('.action-list')).wrap('<li>')
     .parent().first().addClass('first').end().last().addClass('last');
-  // Remove the 'Add ' prefix from the button labels since they're being palced
+  // Remove the 'Add ' prefix from the button labels since they're being placed
   // in an 'Add' dropdown.
   // @todo This assumes English, but so does $addDisplayDropdown above. Add
   //   support for translation.
@@ -273,6 +273,73 @@
  * not written specifically for this UI, but I'm not sure where to put it.
  */
 Drupal.behaviors.viewsUiRenderAddViewButton.toggleMenu = function ($trigger) {
+  $trigger.parent().toggleClass('open');
+  $trigger.next().slideToggle('fast');
+}
+
+/**
+ * The input field items that copy-to displays must be rendered as <input> elements.
+ * The following behavior detaches the <input> elements from the DOM, wraps them
+ * in an unordered list, then appends them to the list of tabs.
+ */
+Drupal.behaviors.viewsUiRenderCopyViewButton = {};
+
+Drupal.behaviors.viewsUiRenderCopyViewButton.attach = function (context, settings) {
+  var $ = jQuery;
+  // Build the copy display menu and pull the display input buttons into it.
+  var $menu = $('#views-display-menu-tabs', context).once('views-ui-render-copy-view-button-processed');
+
+  if (!$menu.length) {
+    return;
+  }
+  var $displayButtons = $menu.nextAll('input.copy-display').detach();
+  if (!$displayButtons.length) {
+    return;
+  }
+
+  var $addDisplayDropdown = $('<li class="copy"><a href="#"><span class="icon add"></span>' + Drupal.t('Copy') + '</a><ul class="action-list" style="display:none;"></ul></li>');
+  $displayButtons.appendTo($addDisplayDropdown.find('.action-list')).wrap('<li>')
+    .parent().first().addClass('first').end().last().addClass('last');
+    // Remove the 'copy to ' prefix from the button labels since they're being placed
+  // in a 'Copy to' dropdown.
+  // @todo This assumes English, but so does $addDisplayDropdown above. Add
+  //   support for translation.
+  $displayButtons.each(function () {
+    var label = $(this).val();
+    if (label.substr(0, 5) == 'Copy ') {
+      $(this).val(label.substr(5));
+    }
+  });
+  $addDisplayDropdown.appendTo($menu);
+
+  // Add the click handler for the copy display button
+  $('li.copy > a', $menu).bind('click', function (event) {
+    event.preventDefault();
+    var $trigger = $(this);
+    Drupal.behaviors.viewsUiRenderCopyViewButton.toggleMenu($trigger);
+  });
+  // Add a mouseleave handler to close the dropdown when the user mouses
+  // away from the item. We use mouseleave instead of mouseout because
+  // the user is going to trigger mouseout when she moves from the trigger
+  // link to the sub menu items.
+  //
+  // We use the 'li.copy' selector because the open class on this item will be
+  // toggled on and off and we want the handler to take effect in the cases
+  // that the class is present, but not when it isn't.
+  $menu.delegate('li.copy', 'mouseleave', function (event) {
+    var $this = $(this);
+    var $trigger = $this.children('a[href="#"]');
+    if ($this.children('.action-list').is(':visible')) {
+      Drupal.behaviors.viewsUiRenderCopyViewButton.toggleMenu($trigger);
+    }
+  });
+};
+
+/**
+ * @note [@jessebeach] I feel like the following should be a more generic function and
+ * not written specifically for this UI, but I'm not sure where to put it.
+ */
+Drupal.behaviors.viewsUiRenderCopyViewButton.toggleMenu = function ($trigger) {
   $trigger.parent().toggleClass('open');
   $trigger.next().slideToggle('fast');
 }

 --- a/css/views-admin.css
 +++ b/css/views-admin.css
 @@ -159,6 +159,7 @@

 /* @group Attachment details new section button */

 +.views-displays .secondary li.copy,
 .views-displays .secondary li.add {
   position: relative;
 }