House Sparrows (AKA English Sparrows) Do Not Like Monofilament Fishing Line

Winter Sparrow Identification

Commonly Misidentified Species: Cold Weather Sparrows - Maine Audubon

Ok I need some humanely advice on my birdly situation?

An ode to a sparrow

Al Batt's Columns, Naturally - Albert Lea Audubon Society

How to Put Monofilament Line On Your Nest Box/Birdhouse (Fishing Line)

When do we say “the bird is standing/landing/sitting on the tree/ground/etc.”? - Quora

Sexual dimorphism - Wikipedia

Al Batt — alBatt

Sparrows — Home

Adding Fishing Line to Bluebird Nest Boxes to Discourage House Sparrows

Rollerfeeder - Preventing and controlling house sparrows in your bird feeder.

How to Deter House Sparrows with Fishing Line [Illustrated Guide] - Bluebird Landlord

Rollerfeeder - Preventing and controlling house sparrows in your bird feeder.

OBN - House Sparrow Advisory