09/03/2026
Most healthy fledglings can fly, either fully or partially, unless the bird is a precocial species. Please understand that each species' developmental process is unique. No rules apply to all. It is simply scientifically untrue to say that all fledglings spend time on the ground and cannot fly. Using this false criterion to assess whether a downed young bird needs care risks harming the bird. Birds that fly fully (not that well, but have the physical ability and feathers to do so) are all cavity nesters, all aerial insectivores, all tiny songbirds (kinglets, little warblers, bushtits), thrushes (bluebirds), and woodpeckers, plus many more. Those that can flutter and partially fly include sparrows, finches, juncos, other thrushes, and doves, among others. Some get out onto the nest edge or in the branches around the nest ("branchers"), these include a variety of songbirds, including some thrushes and shrub-nesting species. Then there are the relatively few whose nest departure has them departing before any flutter or flight - Townsend's Solitaire and Black-headed Grosbeak, for example. Interestingly, the robin should be able to flutter and catch air if only for a short glide. Those that sit in the grass, huddled, nonmoving, and looking sad, are nestlings and should be rescued or renested (40 grams vs 70).
Notably, these 'rules' come from observational studies; they are not absolutes that apply to every region and every bird within a species. Nest departure can vary by location; for example, house finches leave the nest earlier in hotter locations, like AZ. But in Montana, they stay in the nest until they can fully fly. Regional differences can be significant. Nestlings face intense life-and-death issues in the nest. For fledglings, those risks increase exponentially. Early departure is often a death sentence and is caused by multiple human-caused and natural factors. Predators, parent loss, poor habitat/starvation, heat or cold, human disturbance, disease, ectoparasites, and other issues can force the young to leave the nest. Once on the ground, they face a gauntlet of life-threatening challenges.
Humans can do a lot to help fledglings. Learn species ID and then learn about them. Birds of the World is a clearinghouse where you can look up specific birds and learn the basics. For more information, go to the primary source studies. When we notice a bird in an odd location (baby on the ground), acting out of the norm (sitting listless, lethargic, shivering, not active), or know of a potential risk factor (cat, dog, raccoons, ravens), listen to your gut. There's no harm in checking it out.
The very first question, before even the species ID or age, should always be: Is the bird injured? What are the circumstances? What might have happened? Then, is the behavior normal for that species and its developmental stage? Age is irrelevant if the fledgling has hit a window (super common), been caught by a cat (also common), been forced into an early departure by predators ( #1 reason), the nest is overloaded with bot flies, ants, or mites, or if the young are starving, perhaps from losing one parent and being a species in which the male parent is a lackadaisacle feeder (bluebirds, Say's pheobe). I could go on. Read our Found a Bird page for more in-depth detail. Text a picture and ask for guidance from your local songbird rehabilitator. Follow your gut.
Found an injured bird, Found a baby bird, Wild bird rescue. Rescue for wild baby birds, songbirds, and other wild birds in Central Oregon. Specializing in baby birds.
