Pigeon, Bird of Prey, Flight & Migration Patterns

Tracking Hawks and a New Mexican Ecosystem - The New York Times

Bird flight - Wikipedia

Birds of Prey

Fastest animal on planet resides in Teller, Words on Birds, Pikes Peak Courier

Migrating birds hit hard by California's drought - CalMatters

Frontiers Identifying global research and conservation priorities for Columbidae: a quantitative approach using random forest models

Identification Tips and Range Maps for Dove and Pigeon Species in the Migratory Bird Hunter/Harvest Survey

The Basics of Bird Migration: How, Why, and Where

Rock Pigeon Audubon Field Guide

I'm seeing fewer birds in my yard. Is something affecting their populations?