that’s a Mk3.

There are definitely telescopic seat posts that fit birdy’s I has one on my Mk1 after the first snapped. It was 20 years old so don’t worry!

The mk3 was introduced July 2015, and afaik the actual year models haven’t changed much since then at least in Europe. Given where you are based I’m guessing that’s a Pacific cycles model and I don’t know much about their model years.

In Europe (UK) you essentially have 3 models - the Touring with a fairly wide 10 speed 32-9T with Deore gears and brakes and 2 Hub geared models. Yours looks similar to the Touring but without checking the Rear cassette or Derailleur it’s hard to tell. I think Pacific were much more shy about using the 9t cassette and hubs, so I would guess it’s one of the 11t models they did/do.