A month ago my tiny garden was heaving with birds & 30 sparrows at a time would come to my bird feeders, so tame that I could easily walk amongst them without them panicking.
For some mysterious reason, probably only known to the birds themselves or to experts who devote all their time to studying birds, all the bird population does a flit just before the Big Garden Bird Watch.
I suppose we are lucky to get birds to visit at all, living in the middle of a city. Our garden is less than 50ft long & only half as wide. We have a few high dense shrubs that the sparrows like to hide in, which is a good thing as we have had several visits from a sparrow hawk. We have patio, no lawns and lots of plants growing in tubs as well as a couple of tiny ponds.
Next door has half a dozen cats of assorted colours but the bird feeders are high up, away from moggy reach, so casualties are few and I don't ever put seed on the ground. I might have had more luck with a moggy watch!
So why do birds decide to leave the city in January, just before the Bird Watch? Maybe some one out there knows the reason.