The Dodirt 

A curios burrower the Dodirt is a Blish doing some very un-Blish-like things and beating the Ichthyopteryx class's anatomy at its own game. 

The Dodirt is a flightless descendant of the Pigeon Blish whose ancestors ended up staying in the Grassland instead of migrating south in the winter like many of their volant relatives still do today. 

Well, flightless Blish have evolved before all other terrestrial Blish despite evolving from Pentapod ancestors are all Tripods their front limbs shrinking into bony nubs. This stems from the fact that the Blish's "Front limbs" are closer to fins than functioning legs having barely changed since their Exocoetid (Flying Fish) ancestors first developed their lungs from the swim bladder and left the ocean.

 Blish front limbs are only used in flight and walking and even then Blish's are very poor walker's on the ground moving in an awkward up-and-down motion at the shoulder which is why terrestrial Blish favor walking on their pectoral fin and tail-derived back limbs.  

 The Dodirt however is a burrower living in burrows made by other animals. Because they need to dig through the soil the Dodirt are the first Blish to maintain a Pentapod stance well-being terrestrial. 

Another thing that Dodirts have kept as a burrowing adaptation is the retention of the 5 bony rays that all Blish have in their wings the only thing along with their extendable jaws that hint at their Teleost ancestry.   

Dodirts are generalist feeders eating a variety of grass, roots, and insects their strong beaks let them mash most food into a pulp before swallowing. 

Dodirts live in mated pairs with one foraging for food well the other sits on the nest most foraging is done at night as it's when most of their predators are asleep. 

Dodirts lay only one large egg the chick will be tended to by its parents for the first half year of its life before leaving to find its own burrow around autumn. This is when mortality is at its highest as without a burrow the rather awkward-moving Dodirts are easy prey for Terra-Squids and raptorial Blish.