Delighted to see these two papers come out. They build on my earlier PhD work where we (1) showed that #hybrid songbirds take intermediate routes to pure forms on #migration and (2) mapped migratory orientation to a region on chromosome 4. (1/3)Delighted to see these two papers come out. They build on my earlier PhD work where we (1) showed that #hybrid songbirds take intermediate routes to pure forms on #migration and (2) mapped migratory orientation to a region on chromosome 4. (1/3)