Yesterday, mid-day, a female (perhaps a juvenile male) western tanager visited my backyard birdbath in unincorporated Lafayette. Today, just after 2pm, I heard a Northern Pygmy-Owl's evenly spaced

Yesterday, mid-day, a female (perhaps a juvenile male) western tanager visited my backyard birdbath in unincorporated Lafayette. Today, just after 2pm, I heard a Northern Pygmy-Owl's evenly spaced

I was in Hoot Hollow yesterday & saw @ least 4 or 5 flickers, all in or near the tallest tree(s)--mostly red-shafted, but at least 1 yellow. (Lots of winged ants in the air & shed wings on the ground

I can do the math off the top of my head (millions of people have millions of outdoor cats not to mention the more feral population) and know that cats are one of the many combined detrimental things

What Alan Kaplan described in Tilden, I saw in Dimond Park, Oakland today; thrushes going after Madrone berries. Sometimes the simple commonplace magic of nature is overwhelming, as seen here in a

Friends! Naturalist James Wilson and I took a quick look at the Upper Pack Rat trail (just before its junction with the Lower Pack Rat trail, near the lake) after the rains of the last two days to

Today at about 6 PM I observed a ROCK WREN working along the rip-rap in the cove between the Ferry Point Fishing pier and the derelict dock and building to the east. I also saw a tan-striped

I personal believe cats do cause an unnatural stress on birds which frequent feeders. So is it the feeders that are the root cause? I have a feral / roaming cat that stalks my feeders and I believe it

After Jim C posted about the 2 Brant near Powell St in Emeryville this afternoon, I was able to drive down and get my first look at these geese in Alameda County. Both Brant were near the shore just

Berkeley' Aquatic Park: in the reeds at the north end of the big lagoon, a little west of center. This means we saw 5 herons at Aquatic Park today: Snowy Egret Great Egret Great Blue Heron Green

Quick stop at Coyote Hills before work today got one Golden-crowned Kinglet in front of visitors center in the big oak and a flying-away Northern Flicker with yellow shafts in Hoot Hollow. Dave

Phila and all, Check out the American Bird Conservancy's long-running campaign "Cats Indoors" at http://www.abcbirds.org/abcprograms/policy/cats/index.html Kay Loughman phila rogers

Dear Friends: A biologist member of our sightings group, pointed out to me that though cats kill large amounts of birds, they alone (except in rare cases) are not responsible for species decline

Two brant are present in Emeryville about 50 yards south of the Emeryville Fire department building on Powell Street. I can see them from my office window, so I guess they count as an office

Technically, the Stephen's Island Wren was not wiped out by feral cats. It was wiped out by Tiddles, a single pet cat belonging to the lighthouse keeper. At least that is the story. And that was

Rusty and others Mark Rauzon reminded me that in island environments, cats and other predators have definitely caused declines in nesting seabirds. With regard to the Tilden observation, my

<chucao@...> wrote: The Stephens Island Wren went extinct largely because of Feral Cats. Feral cats have been implicated in the decline and/or extinction of several other species of birds

There is one ecological consideration here though. Wild predators such as Weasels must make a living entirely by successful predation within their territory. A lactating female is under great

Phila I know what you mean, but as a biologist I need to point something out. Cats are responsible for the deaths of many birds, and other creatures. However, there is no evidence that cats are