where do sparrows migrate to in the winter
House sparrow Most house sparrows do not move more than a few kilometres during their lifetimes. However, limited migration occurs in all regions. Some young birds disperse long distances, especially on coasts, and mountain birds move to lower elevations in winter.[102][125][126] Two subspecies, P. d. bactrianus and P. d. parkini, are predominantly migratory. Unlike the birds in sedentary populations that migrate, birds of migratory subspecies prepare for migration by putting on weight.[102]
Purple martin The purple martin migrates to the Amazon basin in winter. Its winter range extends into Ecuador[8] but does not seem to ascend far up the Andean foothills.