Michel, your work is superb. I have same setup 7D+400 5.6 and am working to improve my technique.
Seeing the level this equipment can go is inspirational. I note your profile photo shows you sometimes supplement lighting with a speedlight, which is also a good idea. Well done!
Bonjour Michel...
So nice to meet you.
I must tell you that your bird photography is fantastic! Your photos are razor sharp and have such vibrant colors.
You are an inspiration!