Tricolored Heron photographed with a D70 and 75-300 lens. Please tell me what you think and how you would improve it.

Tricolored Heron photographed with a D70 and 75-300 lens. Please tell me what you think and how you would improve it.
This is a Great shot of a heron. On my monitor it seems to have an overall blue caste and I think it looks a little better warmed up.