Wildcat Canyon Birding: Early August

Hermit Warbler

I’ve always enjoyed sharing my love of birds and nature, whether with students in the classroom, field techs on a research trip, or strangers I might meet on the trail. In fact, this was a big reason why I started my photography business. Since I haven’t been able to do this much in person this year, I’ve started to write up some short nuggets to share online. These have been focused on Wildcat Canyon (my local open space), and I’ve been posting versions of these on our Nextdoor network so I can reach neighbors who have ready access to the park. So far the feedback has been really positive and I’ve gotten a lot of messages of thanks along with questions and observations shared.

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SUMMER BIRDS IN WILDCAT CANYON PARK. With the hills covered in beaten down brown grass, August may not seem like an interesting time to look for birds, but it is! What’s going on in the park these days? I’ve put together a few highlights from my own experience walking there, with some help from a citizen science platform called eBird. For example, eBird can summarize the seasonal occurrence of all the birds that have been reported in Wildcat Canyon.

https://ebird.org/barchart?r=L388820&yr=all&m=

What have you been seeing? YOUNGSTERS: Most birds have already finished their nesting season, but family life for many species extends once the nest is empty. Look for groups of Dark-eyed Juncos and Spotted Towhees with the fledglings still showing streaky plumage. Young crows and ravens sound like spoiled brats as they give their higher nasal begging calls. Keep your eye on the ridges for young red-tailed hawks taking advantage of the updraft to look for rodents on the slopes below. In past years I’ve seen more than a dozen from one spot! And our fledgling Great-horned Owls should still be around somewhere!

FALL MIGRATION BEGINS: It’s still a bit early for many of the migrating songbirds, but it’s never too soon to start looking for birds making their way to or through the Bay Area in the fall. I’ve seen a few notices of Western Tanagers already making their way south, including one along McBryde Avenue near the park. These are a great bird to find since they do only pause here in the East Bay Hills during migration. Plus they are gorgeous! Try to get a good look at their beaks to make sure you can separate them from the similarly-sized Black-headed Grosbeak or Hooded/Bullock’s Orioles. For a tougher “migration challenge” in the park, look for another bird that only visits briefly in the spring and fall, the Hermit Warbler. I’ve only seen these little yellow-faced beauties a few times.

WHO’S LEAVING. Some of our summer breeders have left or will leave by the end of August. For example, Ash-throated Flycatchers and our cavity-nesting Tree and Violet-green Swallows, common sights throughout the spring, will be much harder to find by Labor Day. Also, get your last looks at Lazuil Bunting if you can find some, although they are more easily found in the spring when their cheerful song rings out from the mustard and willows.

OUTSIDE THE PARK: Actually, the best migrations going on right now are not in the hills and woodlands. Instead, check along the bay, coast, or other spots where there’s lots of mud or water. I’m talking about Shorebirds! Many species of sandpipers, plovers, and their relatives breed well to the north. Many species have already started their southward migration. Often the adults leave the breeding grounds first, and the fledglings will leave a little later. Shorebirds are one of the trickiest groups of birds to master, and you’ll benefit from good optics like spotting scopes to see more of the fine detail. Even if sorting through field guides to identify shorebirds isn’t (yet) your cup of tea, this is still a great time to appreciate shorebirds in the Bay Area. Not only are some of the adults still in their breeding plumage, but the young may be sporting crisp colorful new feathers as well.

Good birding!

On owls: the balance between love and obsession

Owlet takes flight

Reposting another essay I wrote this year for Golden Gate Audubon. There haven’t been a lot of things to celebrate in 2020, but one highlight has been in finding two Great Horned Owl families in Wildcat Canyon, my local open space. In this piece I talk a bit about taking a moment to evaluate my impact on the birds, in light of the potential negative effects that too much attention can have on these birds. The essay features lots of my photographs as well!

Essay is here, from August 2020.

On Covid and Research

Wilson's Warbler

It’s apparently been ages since I’ve updated my site here! I’ll share an essay I wrote this spring that was published by the Golden Gate Audubon Society, a large local chapter of the national conservation organization. Given the start of the Covid closures, GGAS put out a call to members for essays on their experience with birds and birding during the shelter-in-place regulations that we still, more or less, are facing here in Northern California. Many people wrote about the opportunities of focusing on their local birds, or the importance of connecting with nature during challenging times. My thoughts turned to the hurdles my colleagues in the sciences would be facing.

Essay is here, from April 2020: When Birds Are More Than A Hobby.

Congrats Anna on AmNat Paper

Dr. Anna Perry

A hearty congratulations to Anna Perry, former graduate student in Gail’s lab, for finally seeing the publication of her first major paper from her dissertation.  Check out the July American Naturalist to see the paper and for links to the supplementary materials.

This project started with questions about using the 2nd generation sage-grouse robots to study how males respond to signals of interest or disinterest from females. Our first robot experiments employed a less dynamic robot and we mainly adjusted the proximity to males rather than the robot’s posture or movements. The newer robots that Gail developed with several engineers (Jose Mojica, Scott McKibben, and Jonathan Tran) were more mobile and could simulate pecking at the ground as well as looking around. We anticipated that these simulated behaviors would trick males into thinking we

The journey of this paper started with Anna planning and supervising a series of experiments on the sage-grouse leks in Wyoming, trying test males repeatedly with the robot expressing more or less interested behavior. She also had to design a study to record the behavior of live female sage-grouse to ensure that the movements we had the robot carry out actually relate to live females (this will be a second paper hopefully coming out soon). But in spite of all the work to conduct these studies in the field, and to work with numerous UC Davis undergraduates in the lab to collect data from the resulting video tapes, this turned out to be the quick part of the project.

Anna realized that to really answer questions about how hard a male was willing to work, she needed to rethink how we talk about the sequence of displays that a male sage-grouse performs on the lek. Rather than simply summarizing numbers of struts or simple rates or averages, Anna worked with Richard McElreath and Dave Harris to formulate these bouts of behavior as sequences with probabilities of either continuing in a high-intensity bout or transitioning out of a bout into a rest period (I’m somewhat simplifying here). To write the code to analyze the sage-grouse display data, as well set up simulated data sets to show this technique offer tangible advantages to traditional display metrics, took several additional years! Yes, years!

The result of all this is a published product that is among the most careful and meticulous I’ve ever been a part of. Way to go Anna!

CBC on KQED

Black Oystercatcher, Albany, CA

Black Oystercatcher, Albany, CA

I mentioned a couple of entries ago that KQED Quest came along on the Oakland Christmas Bird Count and produced a feature for their weekly radio program. Well, that feature aired today. You can read the transcript, and also listen to the program using a link at the top of the page. Also note the Oystercatcher and Turkey photos are mine! I thought they did a really nice job. It’s always a surprise what they might include- Andrea was along and recording all morning, so must have had several hours of recordings to support the story.