Vinalssergio155 - thank you!
I am depressed by the fact that many birds in Europe and Africa (those I know a little about) are on the decrease generally, so I was surprised to see the increase in these birds. They have a huge and healthy population.
I was even more surprised as they favour nests in oaks trees - and the latter are dwindling. But at the fact they are increasing is good - urban adaptation maybe?
You can check out bird status on the various Red Lists - these exist for continents and countries.
Here is the recognised European Red List
BirdLife Data Zone
And one for the UK
https://www.bto.org/science/monitoring/psob
And one for the USA - try the US Wildlife Site...
https://www.fws.gov/endangered/species/us-species.html