Let’s not disturb the BIRDS in NEST and me as a wildlife photographer have always tried to shoot the birds on nest from a quite far-off distance so that the Parenting birds first accept me as a friend and then start feeding their babies without a feel of my presence nearby.
On the same nest it was quite interesting to observe the Male feeding the babies as a backup and babies when hatched need a lot more protein diets and that engages both parents to feed them alternatively.