Simplify the following text for a Grade 10 native English-speaking person.
Original: However , while long legs normally indicate a fast runner , the legs and even feet and toes of Anchiornis were covered in feathers , including long flight feathers similar to those in the hind wings of Microraptor , making it unlikely that Anchiornis was a capable ground runner .
Simplified: However , the legs and even feet and toes of Anchiornis were covered in feathers , making it unlikely that Anchiornis was a capable ground runner .