In recent years, multilocus minisatellite DNA fingerprinting has remai
ned a primary genetic technique for the quantification of nuclear DNA
variation in avian populations. After surveying the literature for use
of this technique in birds, frequency distributions of average band-s
haring differences among individuals were generated for outbreeding po
pulations across species. In these populations, unrelated individuals
differed by about 75% of their bands, whereas Ist-order relatives vari
ed by approximately 40%. The latter value approximated those for popul
ations of other species with known or suspected histories of strong in
breeding and/or genetic drift. Our frequency distributions for unrelat
ed and related individuals of outbreeding species from many different
orders establish a baseline against which the band-sharing counts of o
ther avian populations can be evaluated for the potential effects of i
nbreeding and drift.