Even the non-migratory birds are really, for the most part, strangers acclimatized by long sojourn. Some of them--the turtledove, the magpie, the kingfisher, the partridge, and the sparrow-may be classed with our European species, while others betray their equatorial origin in the brightness of their colours. White and black ibises, red flamingoes, pelicans, and cormorants enliven the waters of the river, and animate the reedy swamps of the Delta in infinite variety. They are to be seen ranged in long files upon the sand-banks, fishing and basking in the sun; suddenly the flock is seized with panic, rises heavily, and settles away further off. In hollows of the hills, eagle and falcon, the merlin, the bald-headed vulture, the kestrel, the golden sparrow-hawk, find inaccessible retreats, whence they descend upon the plains like so many pillaging and well-armed barons. A thousand little chattering birds come at eventide to perch in flocks upon the frail boughs of tamarisk and acacia. [Illustration: 045.jpg THE MORMYRUS OXYRHYNCHUS.] Many sea-fish make their way upstream to swim in fresh waters-shad, mullet, perch, and labrus--and carry their excursions far into the Said. Those species which are not Mediterranean came originally, still come annually, from the heart of Ethiopia with the of the Nile, including two kinds of Alestes, the elled turtle, the Bagrus docmac, and the mormyrus. Some attain to a gigantic size, the Bagrus bayad and the turtle to about one yard, the latus to three and a half yards in length, while others, such as the sihlrus (catfish), are noted for their electric properties. Nature seems to have made the fahaka (the globe-fish) in a fit of playfulness. It is a long fish from beyond the cataracts, and it is carried by the Nile the more easily on account of the faculty it has of filling itself with air, and inflating its body at will. [Illustration: 046.jpg AHAKA] When swelled out immoderately, the fahaka overbalances, and drifts along upside down, its belly to the wind, covered with spikes so that it looks like a hedgehog. During the inundation, it floats with the current from one canal to another, and is cast by the retreating waters upon the muddy fields, where it becomes the prey of birds or of jackals, or serves as a plaything for children. [Illustration: 47.jpg TWO FISHERMEN CARRYING A LATUS. 1] 1 Drawn by Faucher-Gudin, from a Medum painting. Petrie, _Medum_, pl. xii.