This is the first in a series of four about a young boy growing up in the countryside before the First World War. For some reason, I read the second in the series (Dandelion Days) back in the early eighties, but I've only just read this one after coming across it in an online bookstore.
At the time I didn't know about Henry Williamson's fascist sympathies. However, setting that aside, it's a wonderful depiction of rural childhood in the early part of the 20th century (though some 'hobbies' like egg collecting, are thankfully now no longer acceptable, and for me it sharply brings home how much of our native wildlife has been lost in the time since it was written.