All of the following are evidence that scientists argue supports the claim that birds descended directly from therapod dinosaurs

Question

All of the following are evidence that scientists argue supports the claim that birds descended directly from therapod dinosaurs EXCEPT Behaviors such as colonial nesting forming herds parental care and mating displays OHollow thin walled bones Forelimbs modified for flight Clavicles collarbone fused to form a furcula wishbone

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