A birthday gift for a good friend, featuring  themaracamoth

Zach is slightly older today, and slightly bigger too... Jak kept reiterating that he had a "big surprise" on his birthday, and all he had to do was take a sip of a strange drink. But I'm not sure this was the little bird had in mind. Having taken a small sip, he appeared to grow as time went on. Steadily increasing in size, all Zach could do was sit and stare as he begins to outgrow his home, almost breaking through the roof, he felt embarrassed as he tried to cover his face, but couldn’t move in the slightest for it was quite a tight fit. He might still be increasing in size in there...
But oddly enough, he doesn't seem too bothered by it. Flustered and confused by his sudden increase in size, they're might not be any other options for him right now...