The sparrows are still missing from the garden. I've done a bit of browsing and came across an article on the Discover Wildlife site. With regard to sparrows, this is what it says:
Let's hope they're right, as I'm already missing the little blighters.
I've been feeding birds in the garden for years and have attracted a large number of sparrows to the exclusion of almost everything else. They cost me a small fortune in bird seed devouring three large feeders full every two days. Then, on Wednesday, they suddenly stopped coming. The seed wasn't touched and the two bowls of water that are usually splashed dry by the end of the day were still full.
This is a mystery. There have always been a lot of cats around so I can't believe that this is the cause. Perhaps a sparrow hawk? Or perhaps it is because on Tuesday I trimmed back the ivy that grows up the corner of the house, and which had already enveloped our external light and a cctv camera. I know that the sparrows enjoyed flying up to the ivy from the feeders, and I'm sure that there may be a nest or two deep inside. But I only trimmed the edges where it was encroaching and left the bulk of the growth intact. Maybe they are super-sensitive to such things. I'll be sad if I've inadvertently caused them to leave, and even more so if they don't come back!