[nysbirds-l] House Sparrow homing instinct question

Does anyone know how strong the homing instinct is with House Sparrows?  I would presume it's not that strong but don't know.  Thanks. Andrew  Andrew v. F. Block Consulting Naturalist/Wildlife Biologist 37 Tanglewylde Avenue Bronxville, Westchester Co., New York 10708-3131 Phone: 914-337-1229; 

[nysbirds-l] House Sparrow homing instinct question

Does anyone know how strong the homing instinct is with House Sparrows?  I would presume it's not that strong but don't know.  Thanks. Andrew  Andrew v. F. Block Consulting Naturalist/Wildlife Biologist 37 Tanglewylde Avenue Bronxville, Westchester Co., New York 10708-3131 Phone: 914-337-1229;