This head shot has a peculiar illumination that I liked, although it might be a little burned.
I really liked head shots:D
Pentax K20d, DA* 300mm/f:4.0, 1/1600, f:4, ISO 400,-0.3 ev, matrix metering, tripod,
Nicely composed and executed Alberto...the dark green background is beautiful and compliments your bird quite well. You have sharp details and excellent color rendition on the Heron...well done...:cool: