Back on track, I made this concept of what I think the tree guards could look like.
This one/Sporkbill, the variant of the Peagawk, I don't think it's used, but I may be wrong. The Peekhen is another, the chicken (Mentally ill looking thing. I love it.) and 1 more, I believe. Discounting the flintstones style Roc.
It's not unheard of them to release stuff on Mon/Tuesday as a secondary. I expect we'll probably get some info this Thursday at the very least.
...what other birbs are they hiding from us?
I've seen a fair few calls for an actual airlock over the last year or so. I hereby propose an building that can separate gasses while also giving us a use for chlorine: the decontamination chamber, an amalgamation of mechanical airlocks and an ore scrubber for dupes. I see it as a building four tiles wide and three or four tiles high. It would block the lateral passage of gas (though ceilings would need to be low enough to keep gasses from passing over the building). It would require a moderate amount of power and have an input for chlorine. Dupes entering one side would get a blast of chlorine - thus decontaminating surface germs on themselves and anything they're carrying - before exiting the other side. The chlorine would be consumed, keeping the building's mechanics consistent with the ore scrubber.
The thing to note is that an aquatuner has no net cooling. What it does is transfer heat energy away from a liquid and dumps it into another medium. This medium could be a liquid like water or a gas like steam. However, at the end of the day it means that you are using power to cool down one thing while heating up another thing. As noted by @bleeter6 you can use a steam turbine to cool the aquatuner. He's incorrect in that it needs to be steel for this to be possible. A gold amalgam aqautuner has an overheat temperature of 175C so plenty to run a steam turbine although you might need two steam turbines in order for it to work depending on the on time needed. There's also the option of skipping the middle man, the aquatuner, altogether. If you already have a source of fairly constant temperature water like a polluted water geyser, or just polluted water from the many pools in the swamp biomes, for instance there not really any advantage in having the aqautuner at all. Just pipe the polluted water through instead as it doesn't really matter what temperature the refined metal comes out as since when you build something from it the temperature is reset to about 40C maximum. And save the 1200W running cost of the aquatuner.