Sunday, March 22, 2020

Post #177 - EPIC Bay Area bike-birding update including San Mateo Laysan Albatross

I wish I was reaching you under different circumstances, but I hope this post offers diversion against coronavirus/COVID-19-prescribed inactivity. I've been on the bike a lot this year - 716 miles on a date when I'd logged < 300 last year - and I'll use this post to highlight my recent county-birding exploits, the game of maximizing species totals in each individual municipality (below table). The San Mateo section is a bit involved, but the Santa Cruz, Santa Clara, San Francisco, and Alameda are comparative snippets. If nothing else, check out the maps to see where I've explored.

San Mateo County
I'll start in my home San Mateo County where I had 264 species of of January 1st. Minus quick late-afternoon spins around Coyote Point park behind my apartment, I don't do much bike-birding in my home county because I'm focused on exploring farther afield. That said, I've had two epic days of San Mateo bike-birding this calendar year, those yielding a combined 7 new birds. I chronicled the first of these, January 14th, in a previous post, but I'll offer the following map as a reminder.

My January 14th ride down the San Mateo Coast

More recently, on March 13, I rode a very similar but slightly-longer route in pursuit of a continuing dark phase Rough-legged Hawk at Pigeon Point. Reaching Pigeon is rarely a problem, but returning home is usually a royal pain-in-the-ass because the prevailing northwest winds build through the afternoon and impede my return. Rather than ride into headwinds when I am tired, I only ride to Pigeon on south winds; there's little impediment early in the day but I get a nice push going home (see below graphic). The one caveat is south winds imply rain, so I have to know I can get down-and-back before it starts pouring. We had no rain - and hence no south wind - in February, so that's why I waited so long to pursue the long-staying hawk.
It took 2 hours and 40 mins to overcome the coastal mountains and cover the 35 miles to Pigeon, the wind gathering through the 9am hour, and a quick scan of nearby power poles revealed the hawk as I arrived. Can't beat a short search after a long ride!

Rough-legged Hawk (dark phase)
Bay Area bike bird #304 / San Mateo bike bird #269  

The hawk handled, I set to seawatching for Black-legged Kittiwake, a species I've missed despite making several late-February- and early-March-trips to Half Moon Bay for it over the last three years. Malia Defelice and Chris Hayward joined my vigil, and we chatted while scanning a relatively quiet ocean against gathering winds. Scanning the horizon, I nearly soiled myself when I spotted an albatross, the bird banking to reveal the light underwings with wide, smudgy wing margins indicative of Laysan. Chris and Malia got onto the bird, and we enjoyed distant but diagnostic views as the bird soared out of view. I've seen loads of Black-footed and quite a few Laysans on pelagics, but this was my first albatross from shore. It was Bay Area bike bird #305 and San Mateo bike bird #270. Though kittiwake didn't show at Pigeon, there was one resting in Pescadero Marsh on my return ride - kismet!

Black-legged Kittiwake
Bay Area bike bird #306, San Mateo bike Bird #271

My recent March 13 ride to Pigeon Point

Santa Cruz County
Santa Cruz County has been on my radar for a while but presents significant access challenges; it's ~43 riding miles to the nearest point of coastal access or ~32 miles (plus a huge climb) to the nearest point of interior access (right map). Either round-trip ride doesn't leave much time or energy for birding, so I back-burnered Santa Cruz plans until some recent Santa Clara bike-birding business brought me within striking distance on January 19th. The way the county lines fall (black lines, left map), I needed to go very far south for Santa Clara access to Varied Thrush and Red-breasted Nuthatch at Monte Bello OSP (VATH, RBNU on left map). Given the northern reaches of Santa Cruz County are only 8 miles beyond Monte Bello, I decided to extend my Santa Clara efforts to include Santa Cruz. I could only allow 90 minutes in relatively specialized ridge/redwood habitat, but I tallied 26 species, Red Crossbill and Ring-necked Duck among them. I'm hoping to reach the coastal side of the county as days lengthen, so stay tuned for that. 

January 19th ride to Santa Clara + Santa Cruz

Santa Clara County
As referenced in the Santa Cruz section above, Monte Bello OSP yielded Varied Thrush and Red-breasted Nuthatch for Santa Clara bike-birds #187 and #188. It was a haul to reach that elevated point, so I'm not sure when I'll be attempting that ride again. More easily accessed is Pearson-Arastradero Preserve, a great oak-savannah habitat and possibly my favorite Santa Clara birding spot. Pearson is an easy 20-mile ride from my apartment, loaded with birds, and usually devoid of people. My February 7th visit yielded Common Merganser and Ferruginous Hawk, Santa Clara bike-birds #189 and #190. Both were too far for decent photos, even with the scope.

San Francisco County
I've made several trips to SF so far in 2020. Two of those were explicitly motivated by the Golden Gate Park Red-naped Sapsucker - a tricky bird which didn't show on either day I visited - but I still found a nice collection of stuff for my SF bike list on each trip. Rather than offer lengthy recounts of each of those rides, I'll offer maps for context. Currently at 199 SF bike-birds, I hope to reach 200 sometime soon, lockdown permitting. Species in red are those for which I looked but ultimately missed.

January 11th - the grosbeak was 
also Bay Area bike-bird #300.

January 31st, my first miss on the sapsucker

February 21st, my second miss on the sapsucker

Alameda County
I'd only biked to Alameda four times before visiting for the fifth time earlier this month, so there was a lot of low-hanging county-bird fruit on that visit. Exploring Dry Creek Regional Park for the first time, a two-and-a-half hour walk yielded 11 Alameda birds including Sharp-shinned Hawk, Hairy Woodpecker, Warbling Vireo, Oak Titmouse, and Pine Siskin. Coupled with Blue-winged Teal, Canvasback, Northern Rough-winged Swallow, and Lincoln's Sparrow added at Coyote Hills on my ride home, my 60-mile ride netted me 15 county birds to raise my cumulative total to 151. I'm hoping to return during spring migration, so that will be another nice bump if that happens. Again, lockdown permitting.

Dry Creek Regional Park

March 19th ride to Alameda

So yeah, lots of maps representing lots of miles! I'm not sure what the virus is going to dictate in the next few weeks, but I'll be out for one long ride each week as long as conditions and rules allow. Stay healthy these next few weeks.

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