Advantages and disadvantages
Skulking, secretive and nocturnal species that would otherwise be overlooked can be located
and population indices or population estimates produced. Careful and highly standardised use of
playback is essential. Great attention needs to be paid to survey protocols and the methods need to be published in full to allow others to replicate them in the future and make comparisons. Some species and individuals may rapidly habituate themselves to playback. Variation in response rate needs careful assessment and will often require research that is more intensive.