Posted: 29/05/2015 at 12:18
Last year, in about the second week in June, a customer was fairly insistent that I cut the spriggy growth on a low hedge to 'tidy it up'. She is keen on birds and insisted there were no nests in the hedge. Within a couple of minutes I found myself in a stand-off with a pair of blackbirds who disagreed. They harried me until I stopped, and by that time a few other birds had joined in; I know now how a sparrowhawk feels.
Two things stand out from this: blackbirds are among the largest garden hedge-nesting birds and they hadn't been noticed, and many other species don't make half as much fuss and so you might not realise you are disturbing them.