My delta ahs developed a real problem, when we are watching tv, if there is a high pitched noise eg; cop car siren, birds tweeting or esp sea gulls squarking she goes mad; jumps off the setee, runs to the tele aand barks and barks till the noise stops, it has come to the point now that if we hear it before she does we make loud noises over it or fast fwd thru the show!!! Even if she hears birds outside tweeting when she's indoors the same happens and as we live in the cointryside its all the time! Does anyone have any tricks to try to get her to tune out high pitched noises but without damaging her need to listen for a whistle when training her......?