EXPLAINING WHICH SCOOTERS BIRD USE
Bird, along with Lime, is one of the two big players in electric scooter dockless sharing. Both companies began in the USA before spreading elsewhere. They have not come to the UK yet because the government has not yet legalised e-scooters on public roads (see this article the UK law). These hire schemes are great, but many users realise that it actually makes sense to buy their own e-scooter, and thus want to know which scooters they have been riding when using Bird, or a similar scheme.
The answer is both simple and yet bears some discussion. Simply put, Bird uses the Xiaomi M365 and the Ninebot-Segway ES2. Bird started out using the Xiaomi M635 electric scooter, which is the scooter they have been most associated with. This is the e-scooter with both a black and white version and the battery in its base (making the base a couple of inches deep). However, Bird also started putting the Ninebot-Segway ES2 (or the ES4) on the streets (either because Xiaomi could not meet demand or Ninebot offered them a deal). The ES2 is the one with the battery in the stem and thus a shallower base.
The ES2 Sandwiched by Two M365s
But just to complicate matters, Bird has recently commissioned a bespoke scooter, which they call Bird Two. Of course, this is not so useful for private ownership because there is not a foldable version. These bespoke e-scooters also tend to be made to stay out on the street - being heavier and larger than the M365 and ES2. So, basically, if you want to buy the same e-scooter as you have been riding, then go for the Xiaomi or the Ninebot-Segway. A comparison of the two can be found here.