On: Farmland practices are driving bird population dec...

[Separo]

Anecdotal but I noticed in Portugal recently, in summer, over the course of two months, I saw pretty much no birds.

[cmilton → Separo]

Just to add an another anecdotal view, here in the US, I have seen more birds than recent years. I attribute the increase in my area to the halting of mosquito spraying practices.