Borb #2 is the kererū, native of New Zealand and a member of the pigeon family.

Borb #3 is this long-tailed tit. Globally widespread throughout temperate northern Europe and the Palearctic, into Scandinavia and south into the Mediterranean.
R O U N D.

Coming in at #4 we have this Western bluebird (Sialia mexicana). Star of every Disney princess movie ever, when not landing on the outstretched finger of the eponymous heroine, they can be found hanging around California, Arizona and New Mexico.

Borbing along at #5 we have the Australian pink robin which looks entirely Photoshopped.

Swooping in at #6 it's the ORBULAR ruby-crowned kinglet, native to North America.

Borb-borb-borbing along it's the Hallmark favourite Erithacus rubecula, or European robin.

Here at #8 we have the ever-popular bluetit, showing that borbness is not born, it's achieved.

#9 Brings us the splendid fairy wren, still drunk and up way past her bedtime, having to walk of shame home with a load of City commuters

Peeping in at #10 it's the snow bunting, who also possesses a brilliantly chonk-sounding name

Swooping in to peck at a cigarette butt before almost being hit by a taxi, at #11 we have the rock dove, better known as your classic city pigeon. Showing that you don't have to be fancy to be BORB

#12 brings our first non-flying borb, in the form of New Zealand's national bird - the Kiwi

#13 is the entirely borbtacular and weirdly-named ptarmigan. The official bird for the Nunavut territory in Canada.

#14 PENGUINS CAN BE BORB TOO
(this is a chinstrap penguin, found on a variety of islands and shores in the Southern Pacific and Antarctic Oceans)

#15 little owl much round

#16 the practically-spherical black-throated bushtit (shut up at the back) with its Dave Vanian-inspired eyemakeup.

He gets two pics just because of the cartoon mouth effect of his black markings.

At #17 we have the ludicrously named PUFFLING.
(And yes, it's a baby puffin.)

And bringing things closer to home, #18 is our very own common-or-garden sparrow. Borb as you like.

#19 shows that some of us lose our borbularity when we grow up

...and some of us don't.
And that's pretty OK.

/end.