Nest boxes

Many recent messages on the CTbirds listserv have mentioned the use of nest boxes, and just this week the chickadees nesting by my backdoor hatched their young. It’s a good time, then, to remember that nest boxes can make it easy to confirm breeding for a variety of species. And, that incidental records of birds in boxes can really help fill gaps for a number of species. Continue reading “Nest boxes”

Tips on confirming breeding

Now that we are well into the breeding season, a major focus of atlas field work should be to try to confirm breeding for as many species as possible.  In terms of the atlas, “confirmation” requires observing nests or behaviors linked to the confirmed breeding codes described on the atlas web page here. Most birds are breeding right now, which means that there are nests everywhere, and birds are exhibiting these behaviors all the time. Nonetheless, observing these things can be hard, especially if you are not used to looking for them. So, here are some tips on how to see the things that let you confirm breeding. Continue reading “Tips on confirming breeding”

Where have all the parids gone? (Answer: probably nowhere)

The summer of 2018 proved to be a really great start for the atlas, but whenever we present last year’s data we are constantly pointing out that comparisons to the first atlas need to be made with care. In part, we make these cautions because the data are still being reviewed to ensure we’ve made no errors. But, the main reason is simply that the historic data come from five years of field work, not just one. Continue reading “Where have all the parids gone? (Answer: probably nowhere)”

Ravens

Over the past couple of weeks, ravens have been a regular sight at UConn. Displaying from the roof of the visitor’s center, wheeling over the parking garage, and yesterday I even heard one while sitting in my office. The species has nested in a farm building near the university’s Depot Campus for a couple of years and is seen throughout the area, but this is the first sign that they might nest right on the main campus. Continue reading “Ravens”

The trouble with fledglings

Recent posts on the ctbirds listserv have highlighted the fact that, although it is still mid-summer, migration is well under way for some species. At the same time, data collection for the breeding portion of the atlas will continue for almost another month. This overlap between migration and breeding reintroduces the need for safe dates to ensure that we are correctly attributing observations to the blocks in which breeding happens. Continue reading “The trouble with fledglings”

Block boundary problems – part 1

Earlier this week, I spent quite a bit of time at Hammonasset State Park.  Because I had some time to kill, I went to Hammonasset Point – the area just south of Rock Pond, at the start of the Moraine Trail, which sits in a separate atlas block from the rest of park.  My goal was to see what I could find that was nesting right in the tiny piece of land that is in block 120B. Continue reading “Block boundary problems – part 1”

Cuckoos carrying food

As we’ve noted before, the CF (carrying food for young) breeding code is problematic for species that regularly carry food for their own consumption. This code is designed specifically for cases where birds are presumed to be carrying food to their dependent young and it can be hard to determine whether that is the case sometimes. Many species can be seen with food in their beaks temporarily. But if they are going to eat it, they usually do so right away. Careful observation for a minute or two will usually ensure that the code is not misused. Continue reading “Cuckoos carrying food”