1) The song thrush.
It was extremely popular as a minor place-name element, noted by Smith more than thirty times. Most popular by far was Throstle Nest, with a majority of examples dating from the eighteenth and nineteenth centuries. It also occurred as a by-name: 1301 de Radulpho Throstelle, Skelton
1306 Thomas Throstel, Kirkburton. Less predictably, it was a popular if ironic name for a horse: 1556 to Elisabeth my wif on amblinge gray mare called throstell, Sherburn in Elmet
1632 one mare called Throsle, Hemingbrough.