A very modest bird, the chiffchaff. Rare to get a clean shot, they're usually obscured by twigs or leaves. 1000mm f/10 1/800 ISO 1000.
5D mark III, 50D, 300D, EOS-M; Samyang 14mm f/2.8, 24-105L, 35 f/2 IS, MP-E, 100L macro, 500L IS II, EF-M 18-55; 1.4xIII, 2x III + 2xII extenders; 600EX-RT; EF-M--EF adaptor.
Former lenses include: 70-200L f/4 non-IS, 85L II, 200L 2.8, 400L 5.6