BuddyPress - Show Group Member Bios on Group Directory

<ul id="groups-list" class="item-list" role="main">

    <?php while ( bp_groups() ) : bp_the_group(); ?>

        <li>
            <div class="item-avatar">
                <a href="<?php bp_group_permalink(); ?>"><?php bp_group_avatar( 'type=full&width=80&height=80' ); ?></a>
            </div>

            <div class="item">
                <div class="item-title"><a href="<?php bp_group_permalink(); ?>"><?php bp_group_name(); ?></a></div>
                <div class="item-desc"><?php bp_group_description_excerpt(); ?></div>

                <?php do_action( 'bp_directory_groups_item' ); ?>
        <?php if ( bp_group_has_members( 'group_id='.bp_get_group_id().'&exclude_admins_mods=false' ) ) : ?>
          <ul id="member-list" class="item-list">
          <?php while ( bp_group_members() ) : bp_group_the_member(); ?>

            <li>
              <!-- Example template tags you can use -->
              <?php bp_group_member_avatar_thumb() ?>
              <?php bp_group_member_link() ?>

              <div class="user_id">
                <?php $member_id = bp_group_member_id(); ?>
              </div>

              <div class="user_bio">
                <?php $bio = xprofile_get_field_data( 'field=Biography', $member_id );
                echo $bio; ?>
              </div>

            </li>
          <?php endwhile; ?>
          </ul>

        <?php else: ?>

          <div id="message" class="info">
            <p>This group has no members.</p>
          </div>

        <?php endif;?>
            </div>

            <div class="action">

                <?php do_action( 'bp_directory_groups_actions' ); ?>

                <div class="meta">

                    <?php bp_group_type(); ?> / <?php bp_group_member_count(); ?>

                </div>

            </div>

            <div class="clear"></div>
        </li>

    <?php endwhile; ?>

    </ul>