Nests are mainly found through systematic searches of a 4.5 km2 core area near our main field station from early June to early July since 2005. Nests are also found opportunistically while conducting other field activities over the study area. Once found, nests are positioned with a GPS receiver. Each nest is then visited during the breeding period to determine clutch size, laying and hatching dates and hatching and fledging successes. Nests found the main research area are monitored more intensely (every 2 to 6 days) while those located elsewhere are monitored less intensively.
