SQLquery

SELECT
    t.the_geom_webmercator,
    t.altitude,
    t.date_time,
    t.device_info_serial,
    t.direction,
    t.latitude,
    t.longitude,
    |/(t.x_speed^2 + t.y_speed^2) AS speed_2d,
    d.bird_name
FROM bird_tracking t
    LEFT JOIN bird_tracking_devices d
    ON t.device_info_serial = d.device_info_serial
WHERE
    t.userflag IS FALSE
    AND t.date_time >= '2013-08-15'
    AND t.date_time < '2014-05-01'
    AND d.bird_name IN (
        'Eric',
        'Nico',
        'Sanne'
    )
ORDER BY
    d.bird_name,
    t.date_time