X
×

Beginning Jan. 18, 2022, the Zoo is open Thursdays, Fridays, Saturdays and Sundays from 8 a.m. to 3 p.m. 

Entry passes are required for all guests, including infants. All visitors ages 2 and older are required to wear a mask in all indoor spaces at the Zoo, regardless of their vaccination status. Fully vaccinated visitors do not need to wear a mask in outdoor areas. Select animal buildings remain closed.

Share this page:

Satellite Transmitters Reveal Migratory Patterns of Snail Kites in South America

In November 2017, Smithsonian Migratory Bird Center postdoctoral fellow Alex Jahn traveled to southern Brazil to study the migration of snail kites with Brazilian colleagues at Taim Ecological Station.

The sun setting over a body of water at Taim Ecological Station in Brazil

Activities in this region, such as damming and draining for industrial agriculture, increasingly impact wetland habitat. Understanding the snail kite’s annual cycle in South America can help conserve this migratory bird, as well as others that use these wetlands.

The Taim Ecological Station, a federally protected wetland in southern Brazil, is home to a diversity of wildlife, including numerous migratory bird species that breed, overwinter or stopover during migration.

A bird nest tucked in between green reeds. The nest contains two eggs and belongs to a snail kite

One of those species, the snail kite, nests at the station from October to January in loose colonies. Snail kites place their nests in reeds just above the water. A typical nest holds two to four eggs.

Navigating to the areas where these birds forage for snails requires the use of kayaks. Once a snail kite catches its prey, it takes it to a nearby perch to extract the snail from its shell. Researchers place traps on these perches to catch the kites.

A researcher wearing a wetsuit holds a dark gray bird, called a snail kite, being careful not to come in contact with its talons

Once a bird is caught, they take several measurements — including bill length, wing chord and molt condition — being careful not to come in contact with the kite’s sharp talons in the process.

A Smithsonian Migratory Bird Center postdoctoral fellow gets ready to release a bird, called a snail kite, that is wearing a satellite tracking device.

The snail kite is then released with a satellite transmitter, which will provide information on the dates of its movements between wetlands, as well as the routes it follows.

A gray map with colored lines indicating where a bird, called the snail kite, has traveled
To date, snail kites captured at Taim Ecological Station have moved northward toward the Amazon Basin, stopping along the way at wetlands along the Paraguay-Paraná River Basin.