I have been trying to learn the difference between the calls of Goldcrest and FIrecrest but am really struggling. I have tried xeno canto but when out in the field I seem to hear so many varied Goldcrest calls I hear one I think is different but when the bird finally shows its a Goldcrest. I love watching goldcrests but would be great not to have to wait for each one to show its self just to be certain I dont miss a firecrest. So I was wondering does anyone have any advice on accurately seperating the calls or does it always involve some guessing?