Population density estimates for three endangered bird taxa from the Pernambuco Endemism Center, northeastern Brazil

Raw perpendicular distance data obtained for population density estimates using distance-sampling method, for three endangered bird taxa endemic to the Pernambuco Center of Endemism, northeastern Brail. The analyzed taxa were the White-shouldered Antshrike Thamnophilus aetiops distans (Edangered), the Brown-winged Mourner Schiffornis turdina intermedia (Vulnerable), and the White-bellied Tody-tyrant Hemitriccus griseipectus naumburgae (Vulnerable).