Browsing by Author "Collins, Charles T."
Now showing items 1-10 of 10
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Breeding of the Black Swift in Veracruz, Mexico
Collins, Charles T.; Landy, Macreay J. -
Metals in Eggs of the California Least Tern in Southern California
Collins, Charles T.Eggs of the endangered California Least Tern (Sterna antillarum browni) which nests in coastal southern California were analyzed for 10 heavy metals. Mean values ranged from 12,241 ng/gm (ppb) for zinc to 70 (ppb) in ... -
Notes on the Breeding Biology of the White-Throated Swift in Southern California
Collins, Charles T.Reproductive activities of White-throated Swifts (Aeronautes saxatalis) were examined from 1997 to 2006 at two nest sites in a human-made structure in southern California. The start of egg-laying was from 27 April to 30 ... -
Notes on the Metabolism of the Cuckoo Owlet and Hawk Owl
Johnson, Wayne D.; Collins, Charles T. -
Sexual Differences in Foraging Behavior of White-Headed Woodpeckers
Koch, Robert F.; Courchesne, Armand E.; Collins, Charles T.Field observations of White-headed Woodpeckers (Dendrocopos albolarvatus) in Southern California are described. A pronounced sexual difference in foraging behavior was noted with males utilizing the upper portions and cones ... -
Survival and Recruitment of Rehabilitated Caspian Terns in Southern California
Skoglund, Julie M.; Duerr, Rebecca S.; Collins, Charles T.Thousands of birds are taken in by animal care centers each year for rehabilitation. Birds returned to health by some centers are banded for later identification, but very few are ever reencountered following their return ... -
The Natal Pterylosis of Closed-nest Building Tyrant Flycatchers (Aves: Tyrannidae)
Collins, Charles T.; McDaniel, Kathleen M. , -
The Natal Pterylosis of Hummingbirds
Collins, Charles T.Of the hummingbirds examined, most have a common pattern of natal down distribution: a single paired row of filamentous mid-dorsal neossoptiles. One exception, Glands hirsuta, typically has 30 short conglomerate downs on ... -
The Natal Pterylosis of the House Finch
Collins, Charles T.; Bender, Kristen E. -
The Use of Jackknife Confidence Intervals with the Richards Curve for Describing Avian Growth Patterns
Bradley, David W.; Landry, Ross E.; Collins, Charles T.The use of jackknife confidence intervals with the Richards Curve for describing avian growth patterns by David W. Bradley, Ross E. Landry, and Charles T. Collins. Bull. Southern California Acad. Sci., 83(3):133-147, 1984. ...