Order: Charadriiformes
Family: Stercorariidae
The Parasitic Jaeger is a sleek, agile seabird recognized for its pointed wings and swift, acrobatic flight. In Patagonia, it is most often seen during the austral summer, when it migrates from its Arctic breeding grounds. This species is highly variable in plumage, ranging from dark to light morphs, and is distinguished by its elongated central tail feathers in adults. Parasitic Jaegers are aggressive and bold, frequently pursuing gulls and terns to force them to drop or regurgitate their catches. Their adaptability allows them to exploit a variety of food sources, including fish, insects, and even small birds. Their presence in Patagonian coastal waters is a testament to their remarkable migratory endurance and opportunistic lifestyle.
Habitat
Open coastal waters, estuaries, and occasionally inland lakes and rivers during migration.
Foraging
Often chases other seabirds to steal food, but also hunts fish, insects, and small birds directly.