Hedge cutting - best time for plant + birds?

Hi all,
From the RSPB:
From the RSPB:
"We recommend not cutting hedges and trees between March and August as this is the main breeding season for nesting birds..."
From the RHS:
So, to be pedandic about it, does everyone rush around between 1st September and the autumn equinox (around 22nd September) to trim their hedges? Also, with a formal hedge that needs 2 or 3 cuts a year, when would be another opportunity to do it?
Thanks in advance,
JT
From the RHS:
"Timing of pruning should take into account the potential for nesting birds... However in general, these are the optimum timings for pruning hedges:
* Deciduous hedges - Maintenance pruning: Each summer
* Evergreen hedges - Maintenance pruning: Each summer"
So, to be pedandic about it, does everyone rush around between 1st September and the autumn equinox (around 22nd September) to trim their hedges? Also, with a formal hedge that needs 2 or 3 cuts a year, when would be another opportunity to do it?
Thanks in advance,
JT
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The hedge borders a very narrow footpath and we have to keep it well trimmed on that side otherwise there are complaints from the Parish Council. One year we nearly decapitated poor Mrs Blackbird who’d not nested far enough into the hedge. She immediately flew from the nest leaving eggs. We kept watch and within a few hours she was back and successfully hatched all the eggs and raised her babes despite being relatively exposed to the footpath traffic. Blackbirds are such good parents!
How do people go about this with any degree of certainty? Otherwise, is the general idea to do a quick check and hope for the best?
Also, do birds tend to return to the nest after being spooked by a hedge cutter e.g. a loud 2-stroke one?