What is associated with: bird brains know the fossils of this early bird were first found in solnhofen bavaria in the 1860s?

Which performer is associated with 'birchard'? Based on the clue 'bird associated with aeneas williams mark mcgwire', what is the answer? Based on the clue 'bird belonging to a movie gladiator', what is the answer? What is referred to by 'bird bill'? Based on the clue 'bird name that completes the simile crazy as a', what is the answer? Based on the clue 'bird similes include spry as a spring chicken pro...', what is the answer? What is referred to by 'bird sitting location'? Based on the clue 'bird thatll do in a pinch 5', what is the answer?