I was born in 1965 and am animal and nature photographer. I live in Geldern, Germany.
I started a few years ago with a 300mm lens. As you've noticed on the duration that this focal length is just too short for wildlife photography, I chose 2009 for an EF500.
Now the photograph changed completely for me, by the greater weight is the freedom of movement with this lens much more limited and my target objects in wildlife photography went more toward songbirds and shorebirds.
I then purchased a 2011 EF600 and have finally found the focal length, which was always my dream.