bird data > past walk reports

7/27/04

Summer is officially here. How do I know that? Well, it's hot for one thing. And the birds are getting scarce for another. Today it was about 84F, a lot cooler than last week's 93F, and we saw only 11 species. Last week's 8 species was close to tying the record of 7 for least species seen since the beginning of 1987. Eleven is not atypical for the 30th week of the year, however. The record is 16 way back in 1991. See the birds_epoch plot at
http://birdwalks.caltech.edu/bird_data/two_plots.htm.

Matt, Kelly, and I toured around the campus. Although the birds were scarce, there were highlights of a sort, if you want to call letting 3 species get away highlights. At one of the early stops in the unpaved parking lot next to the tennis courts, Matt and I observed a flock of Bushtits that were clumped in a very localized spot and seemed to be very agitated. They were making their usual buzzy noises and in addition a more musical trill. As I was focusing on the bushtits, Matt suddenly shouted out "What was that!" I said where, and he said there. It was gone. I didn't see it and I didn't hear it fly. Matt said it was big. The Bushtits immediately got much quieter as if whatever it was was making them nervous. We speculated Crow, Cooper's Hawk, or Owl. But we didn't put anything down. Then on Wilson we saw a single bird that I thought was a swallow fly over a building and disappear. We couldn't get a good ID on it either. The third one we lost was a Hummingbird. Kelly was pretty sure she saw one but couldn't tell what kind and none of us were absolutely sure that it even was a Hummingbird. So no Hummingbird for the day.

It was Matt's last walk today, unless he happens by Caltech at the right time of day on the right day of the week. I appreciate his stepping in and being so reliable in the walks and regret he didn't become aware of them sooner. Of course, that might have delayed his graduation even more! Good luck to Matt in the next phase of his life and career and I hope he does stop by from time to time.

The stats:
The date: 7/27/04
The week number: 30
The walk number: 742
The weather: 84 F, sunny
The walkers: Alan Cummings, Matt Hunt, Kelly Jung

The birds (11):

Rock Dove
Scrub Jay
Mockingbird
House Sparrow
Mourning Dove
House Finch
Acorn Woodpecker
Crow
Black Phoebe
Bushtit
Band-tailed Pigeon

Respectfully submitted,
Alan
7/27/04
http://birdwalks.caltech.edu

PS: Jon and I discussed the mystery sighting reported last week of a pair of Cedar Waxwings and concluded they must have been Red-whiskered Bulbuls.

7/20/04

Only Glenn and I braved the heat for the 741st walk; it was about 93 F by the time we got to Wilson Ave. Glenn only wanted to do half the walk, but perservered so as not to abandon me.

The highlight was Glenn's discovery of a Red-masked Parakeet stationary in a tree behind IPAC. He wasn't moving or making a sound, and we're lucky he spotted it.

Just for a moment, I caught a glimpse of what I thought were Cedar Waxwings. There were a pair, that landed briefly in a leafless part of a tree. Through the binoculars, I saw they were crested, reddish-brown, and about the right size for Waxwings. They then flew out of range. According to the plots, this would be an unusual species for this time of year. Perhaps the experts can chime in.

Other than those, birds were few and far-between. No Scrub Jay Mourning Dove, Hummingbird, or Bushtit. We even had to look for a while to find an Acorn Woodpecker, and the House Finch didn't come until we got to Avery. See the birds_epoch plot at
http://birdwalks.caltech.edu/bird_data/two_plots.htm.

The stats:
The date: 7/20/04
The week number: 29
The walk number: 741
The weather: 93 F, sunny
The walkers: Glenn Hamell, Matt Hunt

The birds (8):

Rock Dove
Mockingbird
House Sparrow
House Finch
Acorn Woodpecker
Crow
Red-masked Parakeet
Cedar Waxwing (?) -- later decided it was Red-whiskered Bulbuls

Respectfully submitted,
Matt Hunt
7/20/04
http://birdwalks.caltech.edu

7/13/04

The 740th walk in the series was a hot one, braved by 4 hardy souls. It was about 92 F and clear, sunny, and bright. The birds seemed few and far between but we wound up with 13, tying for 3rd all-time for week 28 of the year. So it wasn't too bad. See the birds_epoch plot at
http://birdwalks.caltech.edu/bird_data/two_plots.htm.

The most notable sighting was a real close up of a Red-masked Parakeet. In the category of most notable non-sighting: we saw zero Squirrels and usually we're kicking them out of the way. Did I say it was hot?

The stats:
The date: 7/13/04
The week number: 28
The walk number: 740
The weather: 92 F, sunny
The walkers: Alan Cummings, Glenn Hamell, Matt Hunt, Bryan Jacoby

The birds (13):

Rock Dove
Scrub Jay
Mockingbird
House Sparrow
Mourning Dove
House Finch
Anna's Hummingbird
Acorn Woodpecker
Crow
Band-tailed Pigeon
Starling
Red-masked Parakeet
Bushtit

Respectfully submitted,
Alan
7/13/04
http://birdwalks.caltech.edu

7/7/04

Back to reality. For the last few weeks we have either been setting records, tying records, or nearly tying records. In short, the birds have been around in abundance. Today we had a more typical walk for this time of year. We recorded 13 species.
See the birds_epoch plot at
http://birdwalks.caltech.edu/bird_data/two_plots.htm.

About the most notable thing on the walk was the sighting of two species of Parakeets: the Yellow-chevroned and the Red-masked. It was that kind of day. The temperature was pleasant though, about 75F, cool for this time of year.

The stats:
The date: 7/7/04
The week number: 27
The walk number: 739
The weather: 75 F, partly cloudy
The walkers: Alan Cummings, Bryan Jacoby, Kelly Jung

The birds (13):


Rock Dove
Scrub Jay
Mockingbird
House Sparrow
Mourning Dove
House Finch
Anna's Hummingbird
Acorn Woodpecker
Crow
Red-masked Parakeet
Bushtit
Yellow-chevroned Parakeet
Black Phoebe


Respectfully submitted,
Alan
7/7/04
http://birdwalks.caltech.edu

current walk report / two time plots / probability plots / raw data