Females are more migratory than males.
Northern Alberta and the region farther north is the nesting-ground of the migratory birds.
Of birds there are more than 200 indigenous species, it is said, and migratory species are also numerous.
Being now twenty-one years of age, Abraham hired himself to Denton Offutt, a migratory trader and storekeeper then of Sangamon county, and he helped Offutt to build a flatboat and float it down the Sangamon, Illinois and Mississippi rivers to New Orleans.
The insect fauna of Mexico covers a very wide range of genera and species which, like the other forms of animal life, is largely made up of migratory types.
He would go from town to town, "travelling up and down as a stranger in the earth, which way the Lord inclined my heart; taking a chamber to myself in the town where I came, and tarrying sometimes a month, more or less, in a place"; and the reason he gives for this migratory habit is that he was "afraid both of professor and profane, lest, being a tender young man, he should be hurt by conversing much with either."
Further, that the tribes were not normally of a migratory character, as Strabo seems to imply, is shown by the existence of sanctuaries of immemorial age and by frontier ramparts such as that raised by the Angrivarii against the Cherusci.
The mammals of the Mountain Region include the cotton-tail rabbit, red squirrel, lynx and woodchuck; and there is a considerable variety of migratory song-birds, which are common to the more northern states.
According to the census of 1890 the Indian population was 1,295,796, but so far as the migratory tribes are concerned the figures are only guesswork.
(d) The later middle ages saw many minor migratory movements, such as those accompanying the crusades, the pushing of German colonization among the Sla y s, and the introduction of Flemish weavers into England.
Aboriginal races generally follow the migratory system of tillage, clearing the jungle on selected patches, and after taking crops for two or three years abandoning them for new ground.
Mackerel, cod, pollack and flat-fishes are the kinds most frequently attacked by them in the sea; of river-fish the migratory Salmonidae and the shad are sometimes found with the marks of the teeth of the lamprey, or with the fish actually attached to them.
In the south-east farmers are often compelled to retire with their flocks and herds before the thousands of huge, migratory vampires, which descend suddenly on the pastures and are able in one night to bleed the strongest animal to death.
It seems probable, therefore, that marine animals found migratory conditions between these regions, probably by way of northern islands.
When any combination of circumstances has occasioned an increase of the numbers of the lemmings in their ordinary dwelling-places, impelled by the restless or migratory instinct possessed in a less developed degree by so many of their congeners, a movement takes place at the edge of the elevated plateau, and a migration towards the lower-lying land begins.
Where the movement was really of a migratory character it may generally be ascribed to external pressure, in particular from the Huns and the Avars.
The song and insectivorous birds - thrushes, flycatchers, vireos and woodpeckers - of this latitude, are well represented, and the high plateaus (particularly the Pocono plateau) have especial ornithological interest as the tarrying-places, during the migratory seasons, of many species of birds whose natural breeding ground is much farther north.
On the whole, Poland lies to the westward of the most frequented route of the migratory birds, and is less visited by them than the steppes of south-west Russia.
For "fig-pecker"), a small migratory bird of the warbler (Sylviidae) family, which frequents fig-trees and vineyards, and, when fattened, is considered a great delicacy.
Waders and waterfowl are far less abundant, and those occurring are nearly all migratory forms which visit the peninsula of India - the only important exception being two kinds of solitary snipe and the red-billed curlew.
SHAD, the name given to certain migratory species of herrings (Clupea), which are distinguished from the herrings proper by the total absence of teeth in the jaws.
Geese, ducks and other water fowl frequent the lakes and bays in the migratory season, and eagles, gulls, hawks, kingfishers, owls, plover, woodcock, " partridge " (ruffed grouse), robins, orioles, bobolinks, blue birds, swallows, sparrows, and many other insectivorous birds are common.
They are mostly migratory in habit, and are to be found in many other countries.
The Croats formed the western division of the great migratory horde of Serbo-Croats which colonized the lands between Bulgaria and the Adriatic. Contemporary chroniclers called them Chrovati, Belochrobati (" White Croats"), Chrovati, Horvati, or by some similar Latin or Byzantine variant of the Slavonic Khrvaty.
Kohl (Austria and the Danube, London, 1844) and others that, in consequence of the Danube having been in constant use as the line of passage of migratory hostile tribes, it nowhere forms the boundary between two states from Orsova upwards, and thus it traverses as a central artery Wurttemberg, Bavaria, Austria and Hungary, while on the other hand various tributaries both north and south, which formed serious obstacles to the march of armies, have become lines of separation between different states.
Partridges, woodcock, snipe, &c., are among the game-birds; but all kinds of small birds are also shot for food, and their number is thus kept down, while many members of the migratory species are caught by traps in the foothills on the south side of the Alps, especially near the Lake of Como, on their passage.
The most destructive locust is the migratory locust (Locusta migratoria), which causes wholesale destruction in the East.
The commonest and most widely distributed migratory locust is Pachytylus cinerascens.
There remains the question how the necessary migratory freedom of the ions is secured.
The avifauna is very rich in migratory water and marsh fowl (Grallatores and Natatores), which come to breed in the coast region; but only five land birds - the ptarmigan (Lagopus alpinus), snow-bunting, Iceland falcon, snow-owl and raven - are permanent inhabitants of the region.
Radde, among which the most numerous are migratory birds and the birds of prey which pursue them.
Bird life is represented chiefly by migratory species, particularly of genera that inhabit the shores of streams and lagoons.
Naturally these migratory crabs are not limited to Japanese waters.
The cultivators consist of two classes - the resident husbandmen (thani) and the nonresident or migratory husbandmen (pahe).
The natives of towns are less migratory than those of the rural parts of the country.
Of migratory birds over two hundred species have been enumerated.
The first two are migratory, entering rivers in the spring to spawn; of the river-lamprey, however, specimens are met with in fresh water all the year round.
The proportions are continually varying, owing to the new migratory habits of almost every class of the population.
Those plants which are widely distributed are generally found to be propagated from seeds which can easily be carried by the wind or by ocean currents, or form the food of migratory birds.
The birds of Canada are mostly migratory, and are those common to the northern and central states of the United States.
The general results of the two movements in Europe have been thus summarised by Dr Sundbarg: Differences tend to be smoothened out, of course, in dealing with a population so large and varied as that of a continent, but the figures suffice to show the contrast between the early part of the century and the period following the great migratory movements to the new goldfields.
In most parts of its range it is migratory, and in Britain every autumn its numbers receive considerable accession from passing visitors.