......my old pal had 1 of those and swore by it....hovered it over them in the nest and kept the 1 it indicated was a cock....got 2 say it was pretty often right....
..what a player he can eat my dogs anytime !!!!......................but seriously well done looking after the bird as regards so many sceptical questions its human nature.....good luck it will go when its feeling ok i trhink.....