Close omnidirectional microphone placement outperforms distant directional microphones for wildlife field recording

The traditional approach to wildlife field recording used highly directional microphones (rifle mics, parabolic reflectors) to reach distant subjects and reject ambient noise. Watson’s evolved practice reverses this: using omnidirectional microphones placed very close to the sound source, often via long cable runs, produces better low-frequency response, lower self-noise (omnis are less susceptible to wind and handling noise), and a more natural stereo image. The trade-off is greater logistical complexity (cable runs, pre-deployment). A parabolic reflector is still useful when close placement is impossible, but Watson now reserves it for such cases rather than as a default.

Examples

From Sennheiser 815/816 rifle mic as primary tool, to DPA 4060 omnidirectional lavaliers on 100 m cable as default. The DPA 4060’s omni pattern ‘less susceptible to wind and handling noise’ and designed for humid environments (stage performers).

Assessment

Explain one acoustic reason why a close omni mic can outperform a distant directional mic even when the directional mic has higher reach, focusing on the frequency response difference.