Like your style Chosun, jumping in with a Nikon on the Canon feed.
Incidentally, how does the Tamron G2 150-600 rate against the Nikon 200-500 ? on a D7100.
Cheers,
George
Sometimes you just have to jump in when you know someone is missing out on a good thing.
I've never used the tammy but i have a D7200 with the 200-500mm lens and it delivers great results.My wife uses a D7200 with sigmas compact 100-400mm lens and this again delivers great results.
I don't think the D7200 can be beaten at this price point.
The OP did ask if there was a better option for the budget ....
My suggestion was ~75% of the budget.
As Neil said, I don't think the Nikon D7200 sensor can be beaten.
I haven't trialed the Nikon 200 - 500 against the Tamron 150 - 600 directly, but from what I've read of those that have, and have tested them individually, it seems there is not much in it. Unit to unit variability may well account for any differences. I would say ....
Very Slight optical edge to the Niki 200 - 500 ....
Slight versatility and lighter weight edge to the Tammy 150 - 600
Check out Neil G's gallery to see the superb results attainable.
You could even check out my gallery - shots of birds with the Tammy rig ..... I think the Eastern Yellow Robin is best, and displays what is possible with this rig. Note this was in quite low light at 1/400th of a second with the D7100 (D7200 is incrementally better) , and with no processing to speak of.
For the OP, I think it comes down to how much weight they want to carry and what they will be shooting and at what distances .....
Less weight ~ 1.8kg (4lb) choose the Canon EOS 77D and EF400 f5.6
Better image quality, but a bit more weight (though easily manageable, and easily carried on a sling) ~ 2.7kg (6lb) choose the Nikon D7200 and Tamron G2 150 - 600 f6.3
Best image quality, and slightly heavier ~ 3kg (6&1/2lb) choose the Nikon D7200 and 200 - 500 f5.6
Note - in response to Herman's point about handling for BIF .... the zoom lenses allow you to start wide for easier framing and then zoom in - I do that sometimes, and you get good at following even at 600mm - it's a pretty well balanced system. Also, the Nikon D7200 allows you to shoot in 1.3x crop mode for roughly 2x magnification all up and 7fps. Shooting at ~1150mm (35mm equivalent) is pretty addictive !
Chosun :gh: