birds migration routes?

hello,
i live in israel in the northern negev desert, where usually hugh flock’s of birds(stork ,crane) arraive each year and pass us twoard africa, i know that israel is a main land bridge to africa , and its pretty logical that the flock’s from europ choose to fly from this route mainly because of the mediternian sea, that blocks the way of most central europ, but there is two more routes that i find on the map :
from italy to malta and to north africa, seems like a good route for birds.
and from spain to moroco via gibraltar crossing, seems like the better option of the two…
so , can someone help me ?
do the big migrating birds fly from these routes too?
and if soo, which of the three(or 4 maybe??!) is the buissiest ?
thanx in advance!

The Hula Valley in Israel’s Galilee has become one of the main migratory spots for birds en route between Europe and Africa. Although general tourism might be down in Israel, birdwatchers are flocking to the Hula Valley to get a glimpse of the many rare and varied species of birds visiting Israel.

check out website below

Crude experiment with audio monitoring birds with Cornell’s Raven software – amateur WIP

Atlas of Bird Migration: Tracing the Great Journeys of the World’s Birds $8.47 A comprehensive and authoritative guide to the fascinating mysteries of bird migration. Every year, billions of birds leave their North American breeding grounds for winter quarters farther south. That so many birds migrate so many miles, through life-threatening conditions, and to the same place each year, is simply stunning. The editor of this important and lavishly illustrated new book …