Wildlife Clinic

Species

Boat-tailed grackle

Quiscalus major

A large, noisy grackle of the coast, whose males carry long, boat-shaped tails and display from marsh edges.

A male boat-tailed grackle perched on a wooden piling in Florida, glossy blue-black with a very long, keel-shaped tail.

Photo JeffreyGammon (opens in a new tab) / Wikimedia Commons, CC BY 4.0 (opens in a new tab)

At a glance

Size
About 26 to 37 cm long
Weight
About 90 to 250 g
Habitat
Coastal marshes, beaches and towns near the coast
Diet
Insects, crabs, fish, seeds and scraps
In Georgia
Common resident on the coast
Voice
Loud, rattling calls and whistles
Rabies vector
No

Identification

Male
Large, glossy blue-black; very long, keel-shaped tail; eye brown or yellow
Female
Brown with a buff breast
Told apart from
Common grackle, which is smaller with a shorter tail
Where to look
Coastal towns, marinas and marshes

Behaviour

Male boat-tailed grackles display by fluffing feathers, spreading wings and calling loudly. Females nest in colonies in marsh vegetation.

Why they matter

Boat-tailed grackles are one of the most visible birds of the Georgia coast. They eat crabs, insects and scraps, and they are expanding inland.

Reproduction and lifecycle

Nest — A bulky cup in marsh plants or shrubs, in colonies
Eggs — Usually three
Incubation — About 13 to 15 days
Chicks — Fed by the female
Lifespan — Several years

Living around people

  • Grackles in car parks and at restaurants are opportunists; not feeding them keeps them wild.

Misconceptions

  • Brown grackles are a different species. Females are brown.

Related species

Seasonal activity

When this species is breeding, and when there are nests on the ground. Mowing during the shaded months is how most nests are found.

Breeding and active nests by month for this species
JanFebMarAprMayJunJulAugSepOctNovDec
BreedingJan: noFeb: noMar: noApr: noMay: noJun: noJul: noAug: noSep: noOct: noNov: noDec: no
Active nestsJan: noFeb: noMar: noApr: noMay: noJun: noJul: noAug: noSep: noOct: noNov: noDec: no
NotesFlocksMales displayingNestingNestingChicksYoung fledgingPresentFlocksFlocksFlocksFlocksFlocks

Where it lives

Recorded in 14 states and provinces. Each one links to the other animals there, and to the rehabilitators licensed for them.

If you found one

Answer a few questions and you will get a specific answer for what you are looking at.

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