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Hummingbird #s at Kern R. Preserve

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  • KRPFriends
    Hummingbird numbers continue to increase at the Kern River Preserve hummingbird feeders. Two indicators: 1. consumption of sugar water solution is up 2.
    Message 1 of 1 , Aug 11, 2001
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      Hummingbird numbers continue to increase at the Kern River Preserve
      hummingbird
      feeders. Two indicators: 1. consumption of sugar water solution is up 2.
      orioles are no longer being detected coming to the feeders.

      The last two days have seen an all-time high in numbers of hummers at KRP
      feeders since feeding began in 1999.

      Thursday & Friday, August 9 & 10, 2001, 223 oz./1.7422 gals. of sugar water
      solution were consumed each day. That calculates to 1307 BCHUs (Black-chinned
      Hummingbird Units) per day.

      The previous highs were on August 19 & 23, 2000, when 168 oz./1.3125 gals.
      each
      day of sugar water solution consumed calculated to 984 BCHUs per day.

      Last year's peak took place August 23-27 when the daily BCHUs were 984, 938,
      914, 938, and 914.

      Only one day (August 19) before in year 2000 exceeded 900 BCHUs.

      The drop-off after the peak ended August 27 was quite dramatic:
      August 28 - 809 BCHUs
      August 30 - 744
      September 2 -627
      September 4 - 539
      September 9 - 428
      September 16 - 275
      September 23 - 141

      I am very curious to see when the peak and drop-off at KRP feeders occurs this
      year.

      At a private residence in the hills outside Santa Barbara 768 oz./6 gals. of
      sugar water solution consumed each day this past week calculates to 4500 BCHUs
      per day or 3.443 times as many hummingbirds as at KRP feeders. What a great
      show! How many years has feeding taken place there?

      The person outside Nogales, Arizona, who measures 2304 oz./18 gals. consumed
      each day results in a calculation of 13500 BCHUs per day or 10.329 times as
      many hummingbirds as at KRP feeders.

      Where does all this end? Right here, right now.

      Happy & Productive Birding,

      Bob

      Bob Barnes, Audubon-California
      Friends of the Kern River Preserve
      P.O. Box 833, Weldon, CA 93283
      FedEx/UPS: 18747 Hwy. 178, Weldon, CA 93283
      Email: krpfriends@...
      Phone: (760) 378-3044
      Web Site: http://www.kernriverpreserve.org
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