| I evaluated the auditory coo-count method to estimate breeding population density of white-winged doves (Zenaida asiatica). Data was collected on 15 sites in the Lower Rio Grande Valley of Texas during May--August of 2002--2003. My objectives were to evaluate the current coo-count survey, determine if weather and calling intensity showed a relationship, assess the current conversion table, and evaluate the use of an electronic coo-counter. I documented that the peak in calling occurred between mid-May and mid-June. The peak in daily calling occurred from 0600--0800 hours. The optimal duration of the coo-count should be 2--4 minutes. I found that weather did not relate to calling intensity. Both the auditory coo-counts and the electronic coo-counter tally indicated a strong relationship with population and nest density (P < 0.001). Therefore, coo-counts and the electronic coo-counter can be used to estimate dove density. |
