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Posts by Sean Graesser

Curu Wildlife Refuge

Posted by on Jan 14, 2015

Curu Wildlife Refuge

Curu Wildlife Refuge is home to endless amounts of trees fruiting with coconuts, mangrove estuaries, and rows upon rows of mango trees that have long since forgotten how to fruit. Amongst one of these patches of mango trees is our other banding station, and tucked along the trails that bisect a unique edge habitat of White Mangrove trees are our nets. We placed the 22 nets strategically so they would bisect the many attributes of this unique habitat. We catch a wide variety of resident species, whose unique attributes and colors blend them into the harsh environment of this unique tropical...

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Kentucky Warbler Recapture and Cabo Blanco Birds

Posted by on Jan 4, 2015

Kentucky Warbler Recapture and Cabo Blanco Birds

The first session of our fourth year at Cabo Blanco is in the books. Cabo Blanco is Costa Rica’s first national preserve, established over fifty years ago. The preserve is mostly one generation of forest that has re-grown over a 60-year period. It was once all primary forest, but was cut down for farmland. We start the morning walking up a winding trail to our banding station tucked away near a few fallen trees. Along trails we’ve secretly cut are twenty well-placed mist nests to catch a wide variety of avifauna that uses the preserves habitat. Once we reach the base camp every morning we...

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Season Begins in Costa Rica

Posted by on Dec 14, 2014

Season Begins in Costa Rica

It’s that time of year again; I have a number of different tropical research projects associated with the Roger Tory Peterson Institute coming up in the next few months, and I will be posting content to the blog. First up is my personal research project with my partner Tyler Christensen. Tyler and I will spend two months on the Nicoya Peninsula studying Neotropical migrant and resident bird species. We focus our efforts on studying the habitat and how migrants utilize it during their time here in the winter. With resident species we focus primarily on the understanding of their molt...

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Netting the wrong owl and squirrel

Posted by on Oct 17, 2014

Netting the wrong owl and squirrel

What was going to be a quiet night of just trying to band migrant Northern Saw-whet Owls (Aegolius acadicus) turned into so much more. Tyler Christensen and I cut our mist nest lane configuration earlier in the day and returned around 6:45 to get things started. We use an audio lure to try and bring migrating Saw-whet Owls to the nets, so we started that and left the area. We decided to wait till 7:50 to check the nets again. We strolled down to the set-up to find no owls yet, but all of a sudden we heard some rustling. We both looked and saw a Southern Flying Squirrel (Glaucomys volans) run...

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Nicoya Peninsula Avian Research Station seeking volunteers

Posted by on Aug 18, 2014

Nicoya Peninsula Avian Research Station seeking volunteers

The Nicoya Peninsula Avian Research Station is seeking volunteer banding technicians for a winter project in northwestern Costa Rica. The research is aimed toward the study of molt and aging criteria in Costa Rican resident bird species, and collection of data from wintering Nearctic-Neotropical migrants for the Institute for Bird Populations’ MoSI Program. Winter participants will aid in the operation of four bird banding sites on the Nicoya Peninsula. These positions are opportunities for students, educators, amateur or professional ornithologists, and nature enthusiasts to visit one of...

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