should I stay or should I go (Cyanistes caeruleus)

Artist: Mauro Moroni;
Exposure Date: 2015:10:31 10:16:47;
Copyright: Mauro Moroni © 2015;
Make: NIKON CORPORATION;
Model: NIKON D750;
ExposureTime: 1/2000 s;
FNumber: f/8;
ISOSpeedRatings: 2000;
ExposureProgram: Aperture priority;
ExposureBiasValue: 0/6;
MeteringMode: Spot;
Flash: Flash did not fire, compulsory flash mode;
FocalLength: 400 mm;
FocalLengthIn35mmFilm: 400 mm;
Software: Adobe Photoshop Lightroom 6.3 (Macintosh);