I've put up one brief example of beaks, with a 3 month gap. The beak seems to have naturally changed so that blows up my theory a bit. There are still some recognisable bits, but I guess another 3 months and the goal posts will have changed even further. The male 'Dirk Hartog' had some really distinctive beak markings in late 2020, but I can't really see them in his new photos.