Apparently the size of an ostrich brain is the size of a pea. So how big can a Blue Tit’s be? How amazing that this tiny accumulation of nervous tissue can trigger such exaggerated behaviour, with such dramatic consequences on my life. The RSPB website (http://www.rspb.org.uk/) comments that “there is no apparent reason to what triggers an individual bird suddenly to start this behaviour, and it cannot be predicted how intense it will be and how long it will go on for.” Clearly we were at the start of the breeding season and I can only assume that this particular individual bird was shot with an unusual amount of hormones to fuel such a marathon assault.
Now I’m off for a nap!