Useful Hints
- In the southern part of its breeding range, the Blue Grosbeak commonly raises two broods per year.
- Brown-headed Cowbirds commonly lay eggs in Blue Grosbeak nests.
- Many nests incorporate snake skins, but researchers are unsure why.
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Blue Grosbeak (Passerina caerulea )
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Blue Grosbeak nest
Photo © René Corado
Blue Grosbeak eggs
Photo © René Corado
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Breeding male
Photo © Cliff Peterson / Macaulay Library
Female/immature male
Photo © Jerry Callaway / Macaulay Library
Nonbreeding male
Photo © David Disher / Macaulay Library
Breeding male
Photo © Brad Imhoff / Macaulay Library
Female/immature male
Photo © Alex Lamoreaux / Macaulay Library
Breeding male
Photo © Gordon Dimmig / Macaulay Library
Song
© Wil Hershberger / Macaulay Library
Song
© Bruce Rideout / Macaulay Library
Song
© William R. Fish / Macaulay Library
Calls
© Bruce Rideout / Macaulay Library
Tink calls
© William R. Fish / Macaulay Library
Flight calls
© Bob McGuire / Macaulay Library
Where To Find It
Source: Birds of the World
Habitats
open woodland
shrub
Substrates
Live Tree Branch
Bush or Shrub
Vine or Tangle
What You'll Find
Nest Type
cup
Chick
Altricial
Clutch Size
3
5
Nest Height
15 ft
0.5 ft
Nesting Statistics
Incubation Period
11-13
days
days
Brooding Period
9-13
days
days