Intriguing bird-sound

Recently whilst ‘tagging’ acoustic recordings from Sturt NP from June 2012 I noticed a strange call like a child beating a small drum. At first I thought that it resembled a Tawny Frogmouth (TAFM) but it definitely has a ‘drum-like’ quality which I can’t hear on other recordings of TAFM. I’ve put two audio-grabs on my audio website , the drumming is present on both and there is a more orthodox bird-sound on the second which resembles Horsfield’s Bronze-Cuckoo (but I’m sure that it’s not) Could the call be a buttonquail or (heavens-forbid) a Plains-Wanderer? I’ve been through the Xeno-Canto , AVoCet and Macauley library websites but can’t find anything that fits, Have a listen and let me know what you think…. Tom — ******************************** Ian (Tom) Tarrant Hawthorn East 3123 Victoria http://www.aviceda.org ********************************