All of the owl records in the block are on Wisconsin Point, unsurprisingly. It’s easy to see the spatio-temporal bias in the data here: most bird reports in general for the block are on the point, during jaegerfest! Looking at the data at this particular spatial resolution really highlights an issue like this, and is […]

In other nocturnal observations, a long-lost love, astronomy! (Forgive the bad feature photo, it was a time exposure with my iPhone.) I watched Jupiter rise over the lake tonight, and the lake was so calm that you could actually see its reflection. It was one of those beautiful, albeit faint, long light beams down the […]

willow ptarmigan gray-crowned rosy-finch

So, let’s say you’re out banding migratory birds with unique color bands so you can tell individuals apart. You continue your study over several years to see how often the same birds come back, and for how long, to determine how long they live. Cormack-Jolly-Seber (CJS) models are designed to do help with that estimation: […]

To aid in planning to survey my block, particularly for nocturnal visits, aerial photos are a big help. Great horned owls are quite generalist when it comes to habitat. I’ve seen them in urban areas, perched on buildings in spaces that had nearby big trees, and on light posts on the edge of a parking lot. […]

It’s officially time to start making nocturnal visits to my block to look for great horned owls, so I made my 2nd visit tonight. Once I found my way to my block last night, I knew my way around a little better and started to come up with some route ideas.

I had a great horned owl calling outside my apartment in the early morning hours (12:39 AM), which prompted me to make my 1st visit to my atlas block tonight. It was mostly getting familiar with my block, and making the labeled points on the featured photo. Right now, my main target is indeed great […]

Today, we were secondary guides “Bog 1” which was great, but we need to rethink the strategy in upcoming trips. Perhaps oddly, the festival doesn’t have any trips geared toward the crepuscular hours, so people usually do that on their own (though great gray owl is perhaps the most sought-after target). Nonetheless, we made a […]

File this one under: problems I hope to explore with my exploratory data analysis (EDA) suite of tools I want to develop. Here’s my question: the cover photo graph shows line graphs from 2 different models (differing by temporal resolution). The pink line has an observation every 10 days, whereas the blue line has an […]

Though the following terms aren’t all the same, they describe whether or not breeding birds occupy the same territories as they did in the previous year. breeding dispersal – this is a commonly used term, especially in ornithology migratory nomadism – comes up in grassland bird literature fidelity – more broadly used in ecology site territory […]