The disturbance of any birds, especially those that are nesting birds, should be avoided at all cost. If you are in any doubt as to whether you should post a sighting of a vulnerable or breeding species then please always err on the side of caution and ensure that the sighting/sesson has Location Privacy set to 'Only you'.
Birda is in the process of developing functionality to automatically hide the location for sightings of vulnerable bird species. While this functionality is being built, we encourage users to hide the location (read how to to this) of these species manually prior to posting the sighting.
United Kingdom - Schedule 1 species list:
Certain species are protected by law under the Countryside Act 1981 known as Schedule 1. In the UK, these birds and their young are protected by law from the intentional or reckless disturbance at, on or near an 'active' nest.
Capercaillie (in Scotland)
Crossbill (all species)
Diver (all species)
Harriers (all species)
Plover, Little Ringed
In the UK the Rare Breeding Bird Panel release a annual report on the success of many rare breeding birds. Their website contains a comprehensive list of species they currently consider to be 'rare' enough to be included: https://rbbp.org.uk/. If you are luckily enough to see any of these species during the breeding season please hide the location in the Birda app before posting them (read how to to this here).