• Range expansion and noteworthy records of Costa Rican birds (Aves) 

      Sandoval Vargas, Luis Andrés; Martínez Araya, Daniel; Ocampo Vargas, Diego; Vásquez Pizarro, Mauricio; Araya Huertas, David; Carman, Ernesto; Sáenz, Mauricio; García Rodríguez, Adrián (2018-01-19)
      We present new distribution information for 19 species of Costa Rican birds. Thirteen species show changes in altitudinal distribution, 9 are recorded at higher elevations such as Egretta rufescens (Gmelin, 1789), Heliomaster ...