What's Happening With Barcelona's Birds This Autumn
Autumn is one of the more interesting times of year to pay attention to birds in Barcelona, even if the change is easy to miss if you're not looking for it. Two things are happening at once: some birds that spent the summer here are leaving, and others are just arriving, or simply passing through on their way somewhere else.
Who's leaving
Barn swallows and house martins, which fill the summer skies over the city, thin out through September and October as they head south. If you've noticed fewer of them swooping around rooftops lately, that's why.
Who's arriving or passing through
Autumn migration in Catalonia brings a mix of birds moving toward warmer wintering grounds, including birds of prey like black kites and ospreys, which can sometimes be spotted overhead if you happen to be looking up at the right moment. Cormorants and herons also become more visible around this time, and species like the robin begin to arrive for the winter, often more visible in parks and gardens than in the warmer months. According to researchers, this movement is largely driven by two environmental cues: shrinking daylight hours and decreasing food availability, both of which act as internal signals for birds to move on. (CREAF)
Who stays put
Not everything moves. Barcelona's resident population of monk parakeets, grey herons, and peregrine falcons (which nest on buildings including the Sagrada Família) stick around year-round, so the city's parks won't feel empty — just different, with a slightly changed mix of who's around.
A good excuse to pay closer attention
Autumn is a good season to get into the habit of actually looking, rather than just walking past. You don't need to identify everything correctly to notice that something's different: fewer swallows, more robins, an unfamiliar silhouette overhead. That noticing is really the whole game.
If you want a low-pressure way to start paying attention, our Bird Walk on 17 October at Parc de la Creueta del Coll, 9:00 AM is a relaxed, beginner-friendly session — no identification skills required, just curiosity about what's changed since summer.
Sources: CREAF: Migratory birds and species that arrive in Catalonia in autumn · ForeverBarcelona: Birds in Barcelona
