This Long-tailed Tyrant (Colonia colonus) was sallying for stingless bees from a branch outside its nest cavity near Nuevo Arenal, Costa Rica. Photo: @Steph_Doucet #FieldworkPhotoFriday

Snakes on the brain: As I prepare for a talk about Field Safety as my students depart to Costa Rica, I'm thinking about this Slender Hognosed Viper (Porthidium ophryomegas) that I almost touched as I climbed over a log @ACGuanacaste. #LookBeforeYouReach #FieldworkPhotoFriday

This young Geoffroy's Spider Monkey (Ateles geoffroyi) was testing out her independence from her mother, while a small troop moved above my dawn chorus recording location @ACGuanacaste. #FieldworkPhotoFriday

#FieldworkPhotoFriday: working with Canada Warblers in northern AB with @AnjoleneHunt. Covered head to toe to protect from 🦟🌧️ This was my introduction to #fieldwork. It was awesome. #CAWAbunga

Three Inca Wrens (Pheugopedius eisenmanni) performed a highly coordinated vocal trio, during an ill-fated Mennill Lab expedition to #MachuPicchu to study their vocal behaviour. (Our fate: Most of us became ill, and the wrens didn't sing very much.) #FieldworkPhotoFriday

Blue-gray Tanagers (Thraupis episcopus) have showy blue feathers. But for this pair of birds we saw perched on treetop branches @ACGuanacaste, their plumage camouflages them against the sky. Photo: @Steph_Doucet #FieldworkPhotoFriday

A Common Tody-Flycatcher (Todirostrum cinereum) that we found gathering fluff to build a nest @ACGuanacaste. This tiny bird built a big, fleecy, pendulous nest at the end of the dry season. Photo: @Steph_Doucet
#FieldworkPhotoFriday

The White-throated Magpie-Jay (Calocitta formosa) is a super-sized Blue Jay that sounds like R2D2. They are among the most vocal and inquisitive birds @ACGuanacaste, and they are probably the hardest species to catch. #FieldworkPhotoFriday

We captured this Northern Royal Flycatcher (Onychorhynchus mexicanus) along a river in the Guanacaste Conservation Area during @StephDoucet’s studies of their spectacular, erectable crown feathers. #FieldworkPhotoFriday

Female Long-tailed Manakin (Chiroxiphia linearis) incubating two eggs in the flimsy nest she built by weaving leaves and rhizomes around a forked twig @ACGuanacaste. What camouflaged plumage! Part of @steph_doucet's study of manakin behavioural ecology.
#FieldworkPhotoFriday

Incubating Bare-crowned Antbird (Gymnocichla nudiceps) at Rincon de la Vieja: http://goo.gl/fFbHZE Found, photographed, described by then-grad-student David Bradley during our day off from field research (David is now a Director @BirdStudiesCan in BC).
#FieldworkPhotoFriday

Stub-tailed Spadebill (Platyrinchus cancrominus) incubating eggs on its hummingbird-sized nest @ACGuanacaste at the start of the rainy season. Every time I passed this nest, there was always a caterpillar climbing near it.
#FieldworkPhotoFriday

I found this Thicket Tinamou (Crypturellus cinnamomeus) incubating his eggs at the start of the rainy season in the tropical dry forest @ACGuanacaste.
#FieldworkPhotoFriday