Where’s Wildlife · Bird Field Guide
Blue Grosbeak
Passerina caerulea
Pronounced (approx.): pass-er-EYE-nuh seh-ROO-lee-uh
Deep blue plumage with rusty-chestnut wingbars and an exceptionally large triangular bill. Explore the photographs, learn its field marks, and discover where to look.
How to recognize it
Three identification clues
Adult male
Deep blue plumage with rusty-chestnut wingbars and an exceptionally large triangular bill. [1]
Female and immature
Warm cinnamon-brown overall, with wingbars and a mostly unstreaked underside. [1]
Proportions
A heavy head and large bill are useful even when backlighting hides the blue color. [1]
Field tip: Note the bird’s shape and behavior first, then check its markings. Age, season, and lighting can change its appearance.
Where and when to look
Finding Blue Grosbeak
Listen at shrubby field edges and watch exposed branches or wires. A quiet bird may remain low in cover until it moves or sings. [1] [2]
Use the range map above for seasonal context and the sightings link below to explore local records.
Listen for it
Learn the songs and calls
Compare Cornell’s recordings with what you hear outdoors. Listen for the rhythm and quality of each sound, then try to locate the bird visually.
Listen to songs and calls at Cornell ↗Compare the details
Common look-alikes
Indigo Buntings are smaller-billed and lack the grosbeak’s strong chestnut wingbars. Compare bill size first when a blue bird is seen at a distance.
See similar species and comparison photographs ↗Look closer
Field Photographs
Photographs © Where’s Wildlife. Select any image to explore all 4 photographs.
Life history
How this bird lives
Habitat and nesting
Grosbeaks catch insects from foliage, on the ground, and in short flights. Their low cup nests can include bark, leaves, rootlets, and assorted found materials. Some pairs raise two broods. [2]
Food and foraging
Insects, other invertebrates, and seeds. [2]
Watch where the bird searches for food and how it moves. Feeding behavior can be a useful clue alongside plumage.
Did you know?
A closer look at Blue Grosbeak
Range & Sightings
See where people are finding this bird
Explore community observations, photographs, and locations on iNaturalist. Zoom to your area and use date filters to investigate seasonal sightings.
View iNaturalist Sightings ↗Reported sightings are not a complete range map. An area without records does not necessarily mean the species is absent.
Keep Learning
Bring the clues together
Choose a photograph above and describe three things you notice before looking at the identification cards. On your next walk, compare those clues with the bird’s habitat and behavior.
Sources & Further Reading
Numbered references support the identification details and natural-history information above. Cornell links open All About Birds, from the Cornell Lab of Ornithology.
Previous and next birds follow common-name alphabetical order.