A Very Good Friday: Corvallis Neighborhood Gang Hosts Hummingbird Fund-raiser

Today, I returned home to find my kids (Ava (7), Miles (5) and Anna (2)) and the rest of the ‘neighborhood gang’ having a fair to raise money for nature conservation. Sounds suspiciously like a father put them up to this doesn’t it? Well, not directly at least. Let me explain…

The core of our neighborhood gang, made up of about 12-15 kids between the ages of 3 and 11, have been playing together for the best part of the last five years. We have been lucky enough to have some remnant oak savanna behind our house. Here, the kids have played hide-and-seek, knights and princesses, and caught butterflies, snakes (one particularly large bull snake I remember), newts, and beetles -and a host of other insects. They’ve seen life (a chickadee nest in our front yard) and death (sadly, the carcass of great horned owl that turned up one day – much to many parents’ chagrin). Three species of owls live back there, and one Christmas day some bobcats wandered into our tiny postage stamp back-yard from the savanna. At night, the coyotes howl – we think to trumpet their triumphs at catching the cottontails that take refuge in the hawthorns. Of course, the land is home to many Anna’s and rufous hummingbirds.

Three weeks ago, the machines started coming to turn the oak land into a housing development. First, they cut down the trees. Now they are building a road. Before long, there will be a multitude of new houses. This is affecting my own kids far in a far more profound way than I expected – particularly in a generation growing up with iPhones and video-games. I’m not even sure that they currently know how much they will lose once the lawns start being planted.

So, this was the motivation for the fair — to raise money for nature research and conservation! They set up vinegar and baking soda volcanoes, bead necklaces, bracelets, paper cranes, sand art along with other games. The neighborhood came in droves and paid out money to the gang in 20 cent increments that totaled $9! Not exactly a hefty research budget, but the most important funding that has been raised that I can remember. A symbol of how attachment to nature can motivate kids to do amazing things. Who knows, maybe this is the beginning of a neighborhood science & nature gang. $9 should buy quite a few hummingbird feeders! Maybe that will stop them from stealing my carrots…

MGB

 

Back to the office for some/Continuing field efforts for others

Sarah and I just got back home to Oregon after our two and a half month season in Costa Rica. While the bulk of the season is over there will still be quite a bit going on over the next while. Evan and April are staying for the next three weeks to collect the remaining hummingbird movement and visitation data from the RFID grids. Mauricio and Esteban will also be continuing with some long-term data collection projects involving the plants. They will be collecting styles from the flowers so we can look at pollination success across our habitat fragmentation gradient, collecting fruits and seeds and leaves for genetics, doing demography plots.

This season we accomplished the majority of what we set out to do and despite the usual hiccups that happen during fieldwork most things got done.

Capturing: We captured and banded >300 hummingbirds in seven forest sites all of which we banded. Each of these got a series of detailed measurements and had a sample of any pollen it was carrying collected. We attached >250 PIT tags to these hummingbirds.

RFID grids: We set up grids of RFID readers and feeders in seven different landscapes. Within each landscape we had gridlines sampling across different landscape cover types (forest, pasture, scrubland etc.) so that we could compare hummingbird movements and visitation rates. We used unlimited feeders for part of the sampling period and then switched to limited delivery feeders to compare decisions made under differing reward amounts. For example, do hummingbirds go as far into a risky habitat type for a small amount of a resource as they do for an unlimited one? We have had a lot of different birds from several species getting read at these stations and moving among them.

Heliconia pollination: We have run a number of experiments that should help us resolve how hummingbirds are successful when we are not. There are over 200 samples waiting in vials here at the lab for me to begin to process and analyze.

Bird censuses: Doug and Randy Moore were able to conduct bird censuses in 24 of the forest patches we sample with Urs.

Long-term: We continued the sampling for our long-term data collection portions of the study. This will continue into the summer with the help of our local guys.

For me the next stages of the project are to continue helping Evan and the others keep things operating smoothly done in Costa Rica, begin processing the style samples and continue writing papers we have in prep from the work. So the focus changes, but the work continues.

We may begin adding hummingbird/pollination updates form the work here in Oregon.

Adam

Species of the day –– Three-wattled Bellbird (Procnias tricarunculatus)

 

Photo by Sarah Hadley

Species of the day –– Three-wattled Bellbird (Procnias tricarunculatus)

This was another exciting species we saw at Las Tablas, but we have seen it at one of our sampling sites in the past. The three long, wormlike ‘wattles’ hanging near its bill and its relatively bizarre behavior make it quite remarkable. The males perch in the canopy open their bills wide (It looks like their whole head opens up!) and then make a loud BENK call. They look really funny while they do this since there appears to be so much effort involved and they open so wide. The inside of their mouth (called a ‘gape’) is black and looks rather cavernous. We saw one male come and perch on the same branch as another one and then make the call directly into its face! It must have been really loud. The females were around inspecting them while they were calling.

 

Species of the day –– Slaty Flowerpiercer, (Diglossa plumbea)

Photo by Sarah Hadley

Species of the day –– Slaty Flowerpiercer, (Diglossa plumbea)

Hummingbirds are not the only species of birds that feed from flowers. Many other species eat insects from flowers and several are quite specialized for drinking nectar from flowers. The flowerpiercer is one of these. They have an upturned bill with a hooked upper mandible and pointed lower mandible. They hook their upper mandible over the base of the flower’s corolla and then pierce it with the lower mandible. Through this hole they can drink the nectar. Obviously they can’t hover like a hummingbird though and need to do all of this while perched.

Species of the day –– Resplendent Quetzal (Pharomachrus mocinno)

Photo by Sarah Hadley

Species of the day –– Resplendent Quetzal (Pharomachrus mocinno)

Resplendent is defined as being – “Attractive and impressive through being richly colorful or sumptuous”. If there ever was a bird that deserves this title then this is it. Quetzals are related to trogons. They eat fruits such as avocado (not as big as the ones we eat). The males try to rip off each other’s long trailing tail plumes during contests over mates. We saw these at Las Tablas in the Amistad reserve higher up in the mountains from where we work.

Species of the day –– Collared Trogon (Trogon collaris)

Photo by Sarah Hadley

Species of the day –– Collared Trogon (Trogon collaris)

We caught this female collared trogon. While the males are extremely spectacular birds the females are duller in color. This particular female was not the brightest looking one that we had ever seen and its appearance was further marred by two large ticks that were attached to its head. We removed the ticks before letting it go. However, despite the marred appearance it was really interesting to see a trogon up close. They have a very broad bill with a sharp tip for eating fruit. The tip is apparently sharp enough to draw blood from Evan’s finger. They also have very short and weak legs for their size.

Research note – High biodiversity

 

Photo by Karen Dewolfe

Research note – High biodiversity

Biodiversity is “the degree of variation of life forms within a given species, ecosystem, biome, or an entire planet”. Tropical systems tend to be among the most diverse.  While doing research in a diverse system such as tropical forest you are inevitably going to see a great number of extremely unique and exciting things. While some of the most noteworthy are usually those that make it onto this page as posts, there are often many more others that don’t make it. Often this could be because we didn’t get a photo or maybe we already had done up a post for that day. Whatever the reason, there are far more species deserving species of the day status than days we have to post! At the Las Cruces Station there are 113 species of mammals, over 400 species of birds, and seemly countless numbers of plant and insect species! Clearly this is an exciting place to visit, work or study.

Species of the day –– Bicolored Antbird (Gymnopithys leucaspis)

Photo by Sarah Hadley

Species of the day –– Bicolored Antbird (Gymnopithys leucaspis)

These birds are called antbirds because they follow swarms of army ants. They don’t actually eat the ants themselves, but eat the insects and spiders that are fleeing from the swarm. Many have quite remarkable facial skin coloring such as the blue eye ring on this one.

Species of the day –– Golden-hooded Tanager (Tangara larvata)

 

Photo by Sarah Hadley

Species of the day –– Golden-hooded Tanager (Tangara larvata)

Tanagers are among the most brightly colored bird species. Golden-hooded tanagers are a particularly brilliant example. At some times they seem to be quite common around the station, but it had been a while since we had seen one. This one was coming to eat some fruit near the dinning hall.