Sentence examples for main migration from inspiring English sources
To evaluate the potential changes in overlap between migration seasons, I calculated the proportion of sparrowhawks (both young and adult birds included) migrating within the annual main migration period of each passerine species, with the time period between 5 and 95 percentiles of the migration.
I calculated the median migration date and annual main migration periods (dates between 5% and 95% percentiles of migrating numbers) [40], [41] for the 41 passerine species.
It should be noted here that over 10% of the Poles and Bulgarians who report work or family reasons as the main migration motive were still in education just before migrating.
In general, the birds migrate southwest from northwest Europe with Denmark located in the main migration corridor and the Faroe Islands far off (Figure 1a).
In North America, the main migration path of the green darners follows the Atlantic shoreline past New York City, but swarms of them are rarely spotted.
While humans may have left Africa earlier, genetic research indicates that the main migration into Eurasia that eventually peopled the rest of the world probably occurred around then.
Instead, the limited genetic similarity within main geographical areas suggests that breed differentiation could have occurred in more recent times, after the main migrations.
Apart from the westward extension through Siberia to subarctic Europe (A. millefolium-6x /A. apiculata-6x), their main migrations might have been east- and southward into N America.
The main parameters (migration energy, initial defect concentration, diffusion time) are estimated from available experimental data.
The main bird migration routes connect Iceland and the Faroe Islands to Great Britain (Löve and Löve 1963; Johansen and Hytteborn 2001).
This frequently results in premigration concentrations of many species of waterfowl south of the breeding areas, where juvenile maturation and adult molting take place before the main southward migration in the autumn.
