This time, Iolo finds thousands of birds flying to town to spend the night. On Cardiff's busiest street, wagtails are keeping warm above shoppers. A huge flock of jackdaws assemble at the end of the day on a Llanelli industrial estate. There's an amazing aerial display by starlings around Aberystwyth pier.

In the last in the series, Iolo Williams looks for town wildlife all over Wales. In a Pontypool garage he comes across a false widow spider which can sometimes give a nasty bite. Mice have made a home in a garage in Colwyn Bay and a hedgehog visits a garden for his nightly supper in Deri in the Darran Valley.