The request form
http://www.atsb.gov.au/pdfs/FlightCr...ence_check.pdf has three boxes:
1. Accidents and Incidents
2. Accidents only
3. Incidents only.
Creamy is right - that definition that a birdstrike was an 'incident' is nowhere to be found in the current regs (have just run a search on the CD 37). However the ATSB website still talks about incidents w.r.t. birdstrikes.
Soooo...if you ticked box two, would your old incidents (e.g. birdstrikes) come up?