EF 100-400 ii IS & monopod questions for birds, both perched and BIF

[slclick]

I am new to Mode 3 IS. I am a beginner birder and wonder about using Mode 3 with and without the 1.4 Ext and occasionally on a monopod. The lens has the auto sense to turn off when not needed yet a monopods movements on a tilt head can be nothing like the stability of a tripod for which the auto off was designed.

So this is a 2 part question I guess. Best Mode for IS for perched birds? (I know to turn it off for BIF) and will IS help on a monopod and if so which mode?

*I know to handhold shoot with this lens yet in certain conditions and after a period I enjoy the monopod, especially while being patient with birds.

TIA

 

[neuroanatomist]

I use mode 2 on a monopod for perched birds (with my 600/4 II, but the principles are the same).