Goshawk migration

It has been written that Goshawks do not do a complete migration. Do some Goshawks migrate and those same Goshawks at other times, do not migrate? Do Goshawks do a stepping-stone migration? Do Goshawks do an east-west migration? Why do all the Goshawks entering Texas have to go completely through Texas in order to get into Mexico? ANSWER- they don't! Some of those Goshawks do a "drop-off", and winter in Livingston, Aransas National Wildlife Refuge, and Rockport. The same concept applies to the Goshawks of Southern Coastal California. They don't all have to get into Mexico!