Leatherback sea turtle two females in 1993. In Brazil, reproduction of the leatherback turtle is being assisted by the Brazilian Institute of Environment and Renewable Natural Resources' "projeto TAMAR" (TAMAR project), which works to protect nests and prevent accidental kills by fishing boats. The last official count of nesting leatherback females in Brazil yielded only seven females. In January 2010, one female at Pontal do Paraná laid hundreds of eggs. Since leatherback sea turtles had been reported to nest only at Espírito Santo's shore, but never in the state of Paraná, this unusual act brought much attention to the area, biologists have been
Loggerhead shrike sex an adult loggerhead shrike in the field, as they are sexually monochromatic. However, several studies have reported sexual dimorphism in plumage and size traits. Juveniles possess a paler gray plumage that is subtly vermiculated. The loggerhead shrike can be distinguished from the northern shrike by its smaller size, darker grey plumage and larger black face mask that covers the eye completely. It also has a shorter bill with less prominent hook. Their calls are similar. Their vocal range is broad and varied, and has been described as harsh and jarring. The shrike’s notes include squeaky whistles, shrill trills, guttural