Summary

Time for a summary.
Here are the characteristics I have reviewed so far:

• Leg (including tibia/tibiotarsus, metatarsus/tarsometatarsus and femur)
• Post hatch care
• Pubic bones
• Wing composition (inluding actinofibrils, pycnofibres, fibrils, trailing "feathers", and ankles)
• Metabolic rate
• Beaks
• Crests
• Sexual maturation
  
• Trabeculae
• Wing bones (including carpus)
• Dentition
  
• Feet
• Mode of flight
• Furcula
• Acetabulum
• Warm blooded
• Keeled breastbone
• Synsacrum
• Notarium
• Pneumatization
• Uncinate process
• Gizzard stones
• Fused pelvic bones
• Vision
• Brain
• Landing
• Breathing

Miscellaneous

• Genome evidence
• Harry Seeley
• Lineage
• Timing
• Bird/pterosaur correspondences (including flamingo etc)