From 2012 to 2015, the colonies were monitored in summer and winter, during both species' breeding seasons summer for CSL and winter for NES, and in 2014, five censuses were conducted during the course of the year.
De 2012 a 2015, las colonias fueron monitoreadas en verano e invierno, durante las temporadas reproductivas de ambas especies verano para LMC e invierno para EMN, y en 2014 se realizaron cinco censos a lo largo del año.