We’ve previously highlighted the incredible intelligence of Corvids (a family of birds that includes: crows, ravens, rooks, jackdaws, jays, magpies, treepies, choughs and nutcrackers). You can see those posts here and here.
Now we’re marvelling at sparrows and other small birds in urban environments that have learned to trigger motions sensors that open doors. In the four videos below you can see this fascinating behaviour in action.
Read more: http://twistedsifter.com/