BuddyPress.org

Found the avatar filters but not sure how to change it to display the associated group avatar.

$object = apply_filters( ‘bp_get_activity_avatar_object_’ . $current_activity_item->component, ‘user’ );

return apply_filters( ‘bp_get_activity_avatar’, bp_core_fetch_avatar( array( ‘item_id’ => $item_id, ‘object’ => $object, ‘type’ => $type, ‘alt’ => $alt, ‘class’ => $class, ‘width’ => $width, ‘height’ => $height, ’email’ => $email ) ) );

EDIT: seems just changing user to groups will get the image.