Cheers everyone ! Thanks for the comments
I had the 20mm lens, held the camera at near ground level AF-C auto area shot without looking through the viewfinder (wish I had a tiltable screen) and hope for a few good images, I was as close as I could while checking if the birds steel felt "comfortable", they get quite anxious since I have to crouch down fairly close to them , while I pretended to look away - not directly to the birds - they did not like the shutter noise and started complaining loudly after a couple of shots