The accompanying files were used by W.A. Link and J.R. Sauer to perform composite analysis of BBS and CBC data for Carolina Wrens. Files MODEL, DATA, SCRIPT, and INITs (all with extension .ODC) can be used to produce a scripted (i.e., batch-mode) analysis in program WinBUGS, version 1.4. File SCRIPT assumes all of these files are available in the root directory of drive Z:\ (we designated the desktop as drive Z:) File SUMMARY.ODC summarizes the Markov chains produced, and can be opened with program WinBUGS. Program WinBUGS is available for free download at http://www.mrc-bsu.cam.ac.uk/bugs/winbugs/contents.sht