From pterosaur to primitive bird

Here is a draft of the lineage from pterosaur to primitive bird (click to enlarge):

This shows the transition from pterosaur to flying primitive birds and it also shows how the alvarezsaurids and oviraptors fit in as secondarily flightless primitive birds.

Connection of Rhamphorhynchoid pterosaurs to primitive birds:
http://pterosaurnet.blogspot.ca/2015/10/ancestor.html

Oviraptors as secondarily flightless primitive birds:
http://pterosaurnet.blogspot.ca/2014/09/oviraptors-as-secondarily-flightless.html

Connection of Jeholornis and Oviraptors:
http://pterosaurnet.blogspot.ca/2015/10/jeholornis-and-oviraptors.html

If anyone has a comment or a question, please feel free to submit it.