SURVEYS OF PUERTO RICAN SCREECH-OWL POPULATIONS IN LARGE-TRACT AND FRAGMENTED FOREST HABITATS

摘要

We conducted road surveys of Puerto Rican Screech-Owls (Otus nudipes) by playing conspecific vocalizations in secondary wet forest and fragmented secondary moist forest in rural areas of eastern Puerto Rico. Six paired surveys were conducted biweekly beginning in April. We recorded number of owl responses, cloud cover, wind speed, moon phase, and number of cars passing during 5-min stops at 60 locations. Owls responded in similar numbers (P > 0.05) in both habitat types. Also, we detected no correlation of the number of owls with cloud cover, wind speed, moon phase, or passing cars.