What is one of the limitations of using pigeon baited traps for mosquito surveillance?

The choice indicating that pigeon baited traps only sample mosquitoes that feed on birds is accurate because these traps specifically attract mosquitoes that are drawn to avian hosts. The baiting technique relies on the presence of pigeons to lure in mosquitoes, thereby limiting the sample to those species that prefer birds as a blood meal. Since not all mosquito species feed on birds—many prefer mammals or other hosts—this method excludes a significant portion of the mosquito population.

This limitation can skew surveillance data, leading to an incomplete understanding of the overall mosquito population dynamics in the area. Additionally, it means that species responsible for transmitting diseases that primarily affect humans may not be adequately monitored, potentially resulting in ineffective control measures if those specific mosquito populations are not adequately sampled through this method.