[EBB Sightings] Huckleberry bird arrivals and a hasty departure

[EBB Sightings] Huckleberry bird arrivals and a hasty departure

debbie viess
Thu May 08 08:44:32 PDT 2008
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    Summer residents are settling in everywhere. 
    
    Yesterday at the start of the trail, I heard the first
    soft, liquid call notes of a Swainson's thrush. Two
    hours later, at the end of my loop walk, I was treated
    to the sight of it: pale, uniform rufous back and
    buffy eye-ring, illuminated by the last light of day. 
    
    I have been hearing Black headed grosbeaks for the
    past few days. Yesterday I finally caught a glimpse,
    after first listening to its robin-like song, and
    indeed, watching a fat pair of robins run along the
    trail ahead of me. Feels like a homecoming.
    
    Bewick's wrens rule the upper trail, but the winter
    wrens reign in the dark Bay forest below; the presence
    of one yesterday confirms my belief that this is a
    breeding location for them. Pacific slope flycatchers
    sang their odd songs (a rising poot-tweet, followed by
    rapidly descending slurred and staccato tones, which
    reminded me of the sound of a bouncing ball!). One
    also perched in plain sight, giving me good looks at
    those confusing empid characteristics. Thanks for
    nuttin', honey.
    
    Most curious sighting was of a bold pair of Song
    Sparrows. They were along an awful, eroded stretch of
    the upper trail that I have dubbed the "Vinca Vale"
    (due to its overgrowth of invasive plants, and steep
    slopes); this is one of the few areas at Huck that is
    brightly illuminated by the sun. Normally, these
    sparrows quickly dive into the thick vegetation upon
    my arrival, but on this day they continued to boldly
    perch in my purvue. Odd.
    
    Precariously perched myself on the crumbling trail, I
    watched one clutch the frond of a sword fern, and
    another perch several yards away. They seemed intent
    upon a thicket of vegetation, and I wondered if they
    had a nest there. But it seemed strange that they
    would be so obvious. Then, as they both poked about in
    the vegetation, again in plain sight of me, I wondered
    if they weren't feeding on those emboldening oak moth
    larvae. But curiously, one kept fanning its tail, and
    what breeding bird displays as it goes into its nest
    or feeds, for that matter? Weird. 
    
    But all of these theories didn't quite fit, so I kept
    watching. I chose not to raise my binocs, since I
    didn't want to scare them off, and I was more
    interested in behavior than ID, and of course binocs
    narrow one's field of view, as well as sometimes being
    off-putting to the birds. But finally, I just couldn't
    stand it, and glassed the area where they were poking
    around. 
    
    Damned if there wasn't another fat female garter
    snake! She was half-coiled and frozen in place, lying
    hidden across and covered by greenery, about six
    inches below the top of the vegetation, and several
    feet above the ground. The sparrow appeared to be
    feeding nearby and oblivious to the snakes' presence.
    When the snake struck, harmlessly hitting leaves
    rather than the bird, the bird again seemed oblivious.
    What is going on here??! 
    
    Finally, as I watched the bird watching the snake and
    darting about (even eating worms that it caught during
    its bold dance) the snake struck again, but this time
    the sparrow went on the offensive, and drove the snake
    from its hideout! Perhaps it was just waiting for the
    snake to straighten out and become harmless before it
    acted; in retrospect, it was certainly aware of its
    presence all along.
    
    Wow, talk about serendipitous sightings! 
    
    While I hoped for more behavioral glimpses, another
    hiker approached along this barely wide enough for one
    stretch of trail. I stepped aside as best I could, and
    as she passed we chatted a bit. Turned out she was a
    wildlife observer, too, and spoke of seeing both the
    eagles and watching a red-tail recently fly off with a
    snake in its talons! I remarked that it seemed to be a
    good year for snakes, and she agreed.
    
    I have only ever seen garter snakes here at Huck, but
    heads up all you folks who bird the rocky and sunny
    oak woodlands...if a big prey base has increased snake
    numbers over-all, our not so benign local rattlers
    will be in greater numbers, too. Watch where you put
    your hands and feet! And give thanks that at least we
    don't have gators out here, the downside of fabulous
    birding hotspots like Florida and S. Texas.
    
    Debbie Viess
    Oakland 
    
     
    


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