So I've read some articles and had my siblings tell me how Quetzalcoatlus, the largest Pterosaur known (or that I know of at the time of writing this), was actually flightless because it was too heavy to take off. It was as tall as a giraffe afterall. Now I accepted this idea pretty easily, I mean ostriches are big birds but they're flightless too. But what about baby Quetzalcoatlus'. Were they're flightless too and scurried after tadpoles to eat? Or what if they were like the Emperor Sea Striders from Darwin IV.
Sea Striders were the largest animals on Darwin IV in both the book and the documentary. They were so big that they were restricted to walking on the gelatinous surface of the amoebic sea, upon which they also fed. Their young however were nymphs that were capable of flight. If I recall, they would enter a cavity in the adult Sea Strider's mouthless head and bathe in a type of energy and come out completely rejuvenated. Now imagine flocks of Quetzalcoatlus roosting together in prehistoric North America like today's penguins. I don't think they ever found a Quetzalcoatlus nest so I'm guessing parents laid one large head because they were predators. The young were probably still big but not as heavy so maybe they could still fly until they were big enough to fend for themselves. There were pesky insects at the time such as mosquitoes (they have been around for over 100 million years, longer than the giant pterosaur) that would harass Quetzalcoatlus. What if the babies were to their parents what Oxpeckers are to large African mammals? And if predators came to attack the flock, they could have fended it off by snapping their beaks (think of the Gannetwhales from The Future is Wild).
What are your thoughts? Am I on to something or is there something I haven't read yet that corrects everything I wrote? Either way, I'm thinking of applying this idea to a future alien. Maybe a Pteropod from Geb.