How to display "Trash" in my custom post type?

what does it take to display the Recycle Bin in my own Custom Post Type?

function my_custom_post_specialist() {
    $labels = array(
      'name'               = _x( 'Terapeuci', 'post type general name' ),
      'singular_name'      = _x( 'Terapeuci', 'post type singular name' ),
      'add_new'            = _x( 'Dodaj nowego specjalistę', 'book' ),
      'add_new_item'       = __( 'Dodaj nowego specjalistę' ),
      'edit_item'          = __( 'Edytuj specjalistę' ),
      'new_item'           = __( 'Nowy specjalista' ),
      'all_items'          = __( 'Wszyscy specjaliści' ),
      'view_item'          = __( 'Pokaż specjalistę' ),
      'search_items'       = __( 'Szukaj specjalistów' ),
      'not_found'          = __( 'Nie znaleziono specjalisty' ),
      'not_found_in_trash' = __( 'Brak specjalistów w koszu' ), 
      'menu_name'          = 'Terapeuci'
    );
    $args = array(
      'labels'        = $labels,
      'description'   = 'Tutaj znajdują się wszyscy specjaliści.',
      'menu_position' = 4,
      'supports'      = array( 'title', 'editor', 'thumbnail', 'excerpt', 'revisions' ),
      'taxonomies'    = array('areas', 'professions'),
      'has_archive'   = true,
      'menu_icon'     = 'dashicons-groups',
      'public' = false,  // it's not public, it shouldn't have it's own permalink, and so on
      'publicly_queryable' = true,  // you should be able to query it
      'show_ui' = true,  // you should be able to edit it in wp-admin
      'show_in_nav_menus' = false,  // you shouldn't be able to add it to menus
      'has_archive' = false,  // it shouldn't have archive page
      'rewrite' = true,  // it shouldn't have rewrite rules
    );
    register_post_type( 'specialist', $args ); 
  }
  add_action( 'init', 'my_custom_post_specialist' );

It only shows me Drafts, Publications etc, but no Recycle Bin.

Thanks