An article in Clarin is claiming that birds are singing much earlier than usual due to LED lights in the city, but I disagree.
One bird in particular, the Thrush (Zorzal), is very loud all night and I distinctly remember them singing outside our bedroom window when I first arrived in BA in 2005, when there weren't any LED streetlights. Kept me awake, in fact, noisy buggers.
For anyone living in the country with less light pollution, can they confirm this?