Fieldwork

Peru

My work in Peru takes place in the high Andes where I study the migration, ecophysiolgy, genomics, and natural history of giant hummingbirds and Andean songbirds. Previous work has included research on the comparative physiology of marsh birds from coastal mudflats to high-elevation marshes. All work is done in collaboration with Centro de Ornitología y Biodiversidad and Museum of Southwestern Biology.

Giant Hummingbird (Patagona gigas). Photo: Bryce Robinson (Macaulay Library 604164851)

2023 field team, L to R: Marlon Chagua, Emil Bautista, Kyana Montoya, Bryce Robinson, and Jessie Williamson.

2022 field team (minus Cristhian Felix!), L to R: Marlon Chagua, Jessie Williamson, Kyana Montoya, and Emil Bautista.

Jessie samples pollen from a giant hummingbird.

LyAndra Lujan removes a tit-spinetail from a mist net

Field camp at 3,700 meters in the cactus-strewn mountains of Lima Department.

Field site at 3,800 meters in Lima Department

Below Anta Q'asha glacier, Lima, Peru (4,800 masl)

Marlon and Bryce set mist nets among cactus and chinchilcoma flowers.

Vermilion Flycatcher (Pyrocephalus rubinus)

High elevation grasslands above Vitis, Lima Department

Field sampling at Reserva Paisajística Nor Yauyos-Cochas

Sparkling Violetear (Colibri coruscans)

Marsh sampling team (L to R): Chauncey Gadek, Emil Bautista, Jessie Williamson

Field site at 4,300 m in Reserva Nacional de Junín, Junín Department.

Amazilia Hummingbird (Amazilia amazilia), a common lowland species.

Peruvian Thick-knee (Burhinus superciliarus)

Chauncey Gadek checks nets in the marsh

Chile

My fieldwork in central Chile is focused on Giant Hummingbird migration, population genetics, and evolutionary ecology in collaboration with the Museum of Southwestern Biology and Pontificia Universidad Católica de Chile.

Giant Hummingbird (Patagona gigas) on nest.

Aging a young Giant Hummingbird. Photo: Chris Witt.

Giant Hummingbird gets a backpack harness. Photo by Chris Witt.

Austral Pygmy-owl (Glaucidium nana)

White-throated Tapaculo (Scelorchilus albicollis)

Javier Reinoso and Jessie haul gear out of field site, 2017.

Giant Hummingbird with geolocator backpack

Selina Bauernfeind gets ready to process samples.

Rosa Zelada, Jessie, and Alfredo Zelada near Giant Hummingbird field camp.

Central Chile field site

Chilean students learn about hummingbird migration!

Gray-hooded Sierra-Finch (Phrygilus gayi)

Ecuador

Fulbright Fellowship research on reproductive biology of the Golden-plumed Parakeet (Leptosittaca branickii) at Tapichalaca Reserve, and demographics and movement of the Andean Ibis (Theristicus branickii) at Antisana Ecological Reserve, in collaboration with the Jocotoco Foundation.

Golden-plumed Parakeet nest monitoring

Measuring a parakeet nestling at Tapichalaca Reserve

Golden plumed-Parakeet (Leptosittaca branickii) chicks have fully-grown flight feathers!

Vladimir Ushiña and Ben West record field observations at Antisana Volcano, Ecuador

Andean Ibis (Theristicus branickii)

Scouting for Andean Ibis nests near Antisana Volcano

Costa Rica

Research on gap-crossing behavior of understory insectivore birds at La Selva Biological Station, part of the Organization for Tropical Studies.

Red-eyed tree frogs (Agalychnis callidryas) in amplexis

Rainforest flower

JLW scouts sites for playback experiments

Jessie and red-eyed tree frog (Agalychnis callidryas)

Green-and-black poison dart frog (D. auratus)

View from the suspension bridge, La Selva Biological Station

Phyllobates lugubris with tadpoles

Glass frog (Hyalinobatrachium fleischmanni)

Spiny orb weaver

Mexico

Fieldwork to study the nesting behavior of Maroon-fronted Parrots (Rhynchopsitta terrisi) in the Sierra Madre Oriental Mountains of northeastern Mexico for the Monterrey Technological Institute.

Black-tailed Rattlesnake (Crotalus molossus)

Sierra Madre Oriental Mountains

Maroon-fronted Parrots (Rhynchopsitta terrisi), Sierra Madre Oriental

Sierra Madre Oriental Mountains

Astraptes sp.

Nesting cliffs of Maroon-fronted Parrots

Bolivia

Fieldwork to study the nesting biology and conservation of Blue-throated Macaw (Ara glaucogularis) in the Llanos de Moxos grasslands, Beni Department for the World Parrot Trust.