AUTHOR CONTRIBUTIONS
WW developed the study concept (design, objectives, field techniques,
data analysis) and led in the acquisition of data. NG, DAS and PN
provided critical review of the concept and manuscript to ensure a high
level of intellectual content. KM facilitated data acquisition and
reviewed the manuscript. GN participated in nests searching and data
acquisition. JGR assisted with data analysis, interpretation of results
and review of the manuscript.