(verb) the act of cutting down trees in forests and rainforests. This is usually done by logging and/or burning the trees, turning the forest into farmlands and savannas.
(noun) the ability to judge the distance of objects and the spatial relationship of objects at different distances.
(adj) occurring in two distinct forms with visual differences between the males and the females. Dimorphic characteristics in parrots may be color, size or distinct markings.
(noun) term for the waste matter of birds containing both feces and urine.