I've been attempting to snap one of these little birds for sometime. Along with the firecrest, the goldcrest is the UK's smallest bird, added to which they flit around all over the place so they are not always easy to get a good shot of, but I think I'm gradually getting there.
Exif info for those interested
Camera: PENTAX K-5
Lens: K or M Lens
Software: K-5 Ver 1.13
Dimension: 4928 x 3264 px (16.1 MP, 3:2)
Focal length: 300 mm (equiv. 450 mm)
Aperture: F8
Exposure time: 1/320"
ISO speed rating: 400/27°
Program: Aperture Priority
Metering Mode: Pattern
White Balance: Cloudy
Focus Mode: Manual
Image Stabilizer: not ready
Noise Reduction: Off
Flash: Flash did not fire, compulsory flash mode