A method for quantifying bird colonies in sand bars via GPS.
Raeder
F L
FL
Divisão do Curso de Ecologia, Instituto Nacional de Pesquisas da Amazônia, Coleções, Av. André Araujo, 2836, Campus II, C.P. 478, CEP 69083-000, Manaus, AM, Brazil. fernandoraeder@yahoo.com.br
Bernhard
R
R
D000818:Animals; D001717:Birds; D009425:Nesting Behavior; D010063:Ovum; D011156:Population Density; D012098:Reproduction; D012621:Seasons