Bird Alarm Calls: What Backyard Birds Are Reacting To
Bird alarm calls can warn of hawks, owls, cats, snakes, nest threats and other danger. Learn how alarm intensity, mobbing calls and chickadee warnings work.
Why Birds Become Territorial in Spring
Birds become more territorial in spring because breeding makes nest sites, food, display space and mates worth defending. Learn how song, chasing and seasonal cues fit together.
How Birds Stay Warm in Winter
Birds stay warm in winter with feather insulation, fluffing, shivering, shelter, food reserves, huddling, cooler feet and—in some species—nighttime hypothermia or torpor.
Where Do Birds Go When It Rains?
Birds shelter from heavy rain in dense shrubs, protected branches, cavities, shoreline cover and other low-wind microhabitats. Learn what different birds do in wet weather.
Where Do Backyard Birds Sleep at Night?
Backyard birds sleep in different kinds of roosts: dense shrubs, tree cavities, protected branches, water, chimneys and communal roosts. Learn where common birds go after dark.
Do Birds Feed More Before a Storm? What Weather Changes Do
Birds may feed more intensely before some storms, especially when falling pressure, cold and poor foraging conditions are approaching. Learn what changes—and why it is not a universal storm forecast.
Why Birds Chase Each Other Away From Feeders
Birds chase each other away from feeders because concentrated food creates competition and dominance interactions. Learn why size matters, which birds punch above their weight, and how feeder design can reduce crowding.
Why Do Small Birds Mob Hawks and Owls?
Small birds mob hawks and owls to expose, harass and sometimes drive away a predator. Learn why mixed-species mobs form and what the commotion can tell birders.
