Original sentence: ) and stood 4 ft.Cormorants & allies (Pelecaniformes).Herons & allies (Ciconiiformes).It had a wingspan of 6 m (20 ft.The immense bird had wingspan of 8.3 m (28 ft) and a length of over 3 m (10 ft) long.The largest Tubenose of all time was the albatross-like Gigantornis eaglesomei, with a 6 m (20 ft) wingspan.The largest in this group and the second largest bird of all time was the gigantic Osteodontornis.The largest of Ciconiiformes and of all flying birds was Argentavis magnificens.Tubenoses (Procellariiformes)
Edited sentence: Bony-toothed birds (Odontopterygiformes).Exact size estimates and judging which one was largest are not yet possible for these birds, as their bones were extremely thin-walled, light and fragile, and thus most are only known from very incomplete remains.Storks & allies (Ciconiiformes).The immense bird had wingspan estimated up to 8.3 m (28 ft) and was as high as an adult human when standing.The largest in this group – which has been variously allied with Procellariiformes, Pelecaniformes and Anseriformes – and the largest flying birds of all time other than Argentavis were the huge Cyphornis, Dasornis, Gigantornis and Osteodontornis.The largest of Ciconiiformes and the largest flying bird presently known was Argentavis magnificens.They had a wingspan of 5.5-6 m (18-20 ft) and stood about 1 meter (3-4 ft) tall