My opinions:
>>2944335Sharp, good composition, maybe a bit of color cast issue.
>>2944355Great shot, especially in seemingly challenging light (1/60, ISO 1000).
I agree, 300 f/4 is the perfect balance of reach, speed, and weight. I'm always recommending it.
>>2944356Difficult birds to shoot in backlit conditions, due to black eye and head. Walking around the tree would have helped.
>>2944637Dark and muddy... eye wanders up away from subject in search of some color. I would have waited for him to be in the light. That or used fill flash if it were too rare a subject to wait for.
>>2944640Framing is good, but nothing is sharp.
>>2944643Too backlit, mane.
>>2944762Backlit again. Shame.
>>2944764One half of the face is blown out highlights, the other lost in shadow. Focus was missed. Colors are nice though.
I'd post something recent, but haven't shot in 2 weeks as my free time has consisted of realtors, lawyers, inspections, banking, and all the fun stuff associated with moving.