Breeding biology of the California least tern

Author(s)

Massey, Barbara W.

Year

Tue, 01/01/1974 - 12:00

Article Title

Breeding biology of the California least tern

Volume

Pages

1-24

Start Page Number

Final Page

Review

Datapoints

Displaying 1 - 11 of 11 datapoints.

Species: California Least Tern (Sterna antillarum ssp. browni)
Exposure Endpoint Type	Endpoint Description	Endpoint Value	Sample Size	Units	Life Cycle Stage	Specific Location	Range	California Counties	Type
Survival/ Mortality	proportion of hatched birds that survived during post-fledging period, 2 years		42-140 hatched birds/year	%	Hatchling	Sunset Aquatic Park, Huntington Beach	11-33	Orange	Exposure Factor Datasets
Time of Migration or Dispersal	time of arrival at breeding grounds	late Apr	2 colonies		Adult	Sunset Aquatic Park, Huntington Beach; Santa Margarita Lagoon		Orange	Exposure Factor Datasets
Clutches or Litters per year	normal number of broods per year	1	Not Reported		Adult	Sunset Aquatic Park, Huntington Beach; Santa Margarita Lagoon		Orange	Exposure Factor Datasets
Time of Mating/ Laying	period of egg laying, 2 years	May-Jul	2 colonies		Adult	Sunset Aquatic Park, Huntington Beach		Orange	Exposure Factor Datasets
Clutch or Litter Size	most frequent clutch size, 2 years	2	96 nests		Adult	Sunset Aquatic Park, Huntington Beach	1-3	Orange	Exposure Factor Datasets
Duration of Incubation or Gestation	most frequent incubation period, 2 years	22	41 clutches	d	Embryo	Sunset Aquatic Park, Huntington Beach	20-25	Orange	Exposure Factor Datasets
Hatching Success	range of hatching success, 2 years		53-157 eggs/year	%	Hatchling	Sunset Aquatic Park, Huntington Beach	80-90	Orange	Exposure Factor Datasets
Body Weight - Mean	mean body weight of day 0 chicks	5.93	77 birds	g	Hatchling	Sunset Aquatic Park, Huntington Beach		Orange	Exposure Factor Datasets
Body Weight - Mean	asymptotic body weight of juveniles at 15 days of age	39.62	8 birds	g	Fledgling	Sunset Aquatic Park, Huntington Beach		Orange	Exposure Factor Datasets
Time of Migration or Dispersal	timing of dispersal from breeding areas	first two wks Apr	1 colony		Both Adults and Juveniles	Sunset Aquatic Park, Huntington Beach		Orange	Exposure Factor Datasets
Age at Fledging, Metamorphosis, Weaning	approximate age of fledging (first flight)	20	2 birds	d	Fledgling	Sunset Aquatic Park, Huntington Beach		Orange	Exposure Factor Datasets

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