A number of nests are placed so close together as to form one great mass of sticks.

These parrots always live in flocks, and commit great ravages on the corn-fields.
I was told that near Colonia 2500 were killed in the course of one year.

A bird with a forked tail, terminated by two long feathers (Tyrannus savana), and named by the Spaniards scissor-tail, is very common near Buenos Ayres: it commonly sits on a branch of the ombu tree, near a house, and thence takes a short flight in pursuit of insects, and returns to the same spot.

When on the wing it presents in its manner of flight and general appearance a caricature-likeness of the common swallow.

It has the power of turning very shortly in the air, and in so doing opens and shuts its tail, sometimes in a horizontal or lateral and sometimes in a vertical direction, just like a pair of scissors.
OCTOBER 16, 1833.
Some leagues below Rozario, the western shore of the Parana is bounded by perpendicular cliffs, which extend in a long line to below San Nicolas; hence it more resembles a sea-coast than that of a fresh-water river.