MIGRATION. 
405 
climate is so equable, that one can scarcely discern any 
distinction at all between the different seasons, presents 
at all times such great advantages to its feathered 
inhabitants, that they remain from year’s end to year’s 
end, more or less in the same locality: they are under no 
necessity to migrate further afield. This explains the 
fact, that though the lowlands of Brazil afford an asylum 
to divers visitants from the southward, as also from the 
Andes, at certain seasons of the year, yet there is no need 
to impose a temporary exile upon the native species. 
“ Swallows and Cuckoos,” says the prince, u are perma¬ 
nent residents in Brazil; the Storks never abandon the 
districts where they have bred; and every songster 
sings its simple lay the whole year round. The native 
species are either permanent residents, or such as belong 
to the third or last class of migrants, the two first classes 
being unrepresented.” Accidental and local, though 
regularly recurring, causes,—possibly, indeed, the innate 
desire for change,—give rise to a certain amount of 
migration within narrow limits. “ The continuous 
succession of thunder-storms, accompanied with deluges 
of rain, renders the atmosphere of the primaeval forest 
cool and damp; the earth steams and reeks with 
moisture, and never dries at this season. The feathered 
tribe now abandon the forest and seek the open country, 
where a plentiful supply of oranges, bananas, guavas, and 
other luscious fruits, present attractions not to be resisted. 
Thus, at this time of the year one may say that there 
exists a regular migration to the inhabited districts. 
That such a movement takes place at different seasons 
in different parts of Brazil, according to the climate, 
is easy to be understood: it usually coincides with the 
degree of latitude.” The magnificent Macaws, many 
