Through the Rectangular Window.

Yes. Oblong window would have sounded better but I spent many years convincing teenagers that no such thing exists and that if that word appeared on an exam answer paper there would be no marks awarded! So I went for mathematical accuracy at the expense of a snappier title.

I've walked around this little lake many times and I know it's a bird sanctuary. I've never actually walked down to the hides. Along boardwalks with reeds taller than me and even taller than Igor. 

Now I have.