Hi Carlos , happens to me sometimes, frustrating! It's never when I save it though! Lol.
Inpar thanks. The big bird watch, we document it, pick an hour out of the weekend and watch how many birds land in your garden! We then let RSBP know so they have an idea how many birds are about, what are rarer, etc. They say there's a shortage of sparrows but we get loads here, but overall I guess they may be short. It's good fun though and I think if people take part who don't usually feed the birds it helps the birdies have a feast too!