But I didn’t have to learn how to do this. I was already an expert. It was a trick I’d learned early in my life; a small slightly fearful girl, obsessed with birds, who loved to disappear. Like Jumbo in Tinker Tailor Soldier Spy, I was a watcher. I had always been a watcher. When I was a child I’d climb the hill behind my house and crawl into my favourite den under a rhododendron bush, wriggling down on my tummy under overhanging leaves like a tiny sniper. And in this secret foxhole, nose an inch from the ground, breathing crushed bracken and acid soil, I’d look down on the world below, basking in the fierce calm that comes from being invisible but seeing everything. Watching, not doing. Seeking safety in not being seen. It’s a habit you can fall into, willing yourself into invisibility. And it doesn’t serve you well in life. Believe me it doesn’t. Not with people and loves and hearts and homes and work. But for the first few days with a new hawk, making yourself disappear is the greatest skill in the world.