One of our many roadside stops in Morocco was outside a town called Ouzarzate. Amongst the many birds there were a pair of Spectacled Warblers. I'd never seen this species before, let alone photographed it, and so once I was done with Wheatears, moved on to these. All with the 1D4 and 800mm lens - over 1000mm of focal length is massively helpful for small birds, even when they're as close as this bird was.