Engels, William L - Biodiversity Heritage Library

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DAY-LENGTH AND TERMINATION OF PHOTOREFRACTORINESS IN THE ANNUAL TESTICULAR CYCLE OF THE TRANSEQUATORIAL MIGRANT DOLICHONYX (THE BOBOLINK)

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By: Engels, William L

Type: Article

In: The Biological bulletin

Volume: 123

Date: 1962-08-01

Page Range: 94--104

Publication Info: Woods Hole, Mass Marine Biological Laboratory
MIGRATORY RESTLESSNESS IN CAGED BOBOLINKS (DOLICHONYX ORYZIVORUS, A TRANSEQUATORIAL MIGRANT)

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By: Engels, William L

Type: Article

In: The Biological bulletin

Volume: 123

Date: 1962-12-01

Page Range: 542--554

Publication Info: Woods Hole, Mass Marine Biological Laboratory
PHOTOPERIODICALLY INDUCED TESTICULAR RECRUDESCENCE IN THE TRANSEQUATORIAL MIGRANT DOLICHONYX RELATIVE TO NATURAL PHOTOPERIODS

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By: Engels, William L

Type: Article

In: The Biological bulletin

Volume: 137

Date: 1969-10-01

Page Range: 256--264

Publication Info: Woods Hole, Mass Marine Biological Laboratory
PHOTOPERIODISM AND THE ANNUAL TESTICULAR CYCLE OF THE BOBOLINK (DOLICHONYX ORYZIVORUS), A TRANS-EQUATORIAL MIGRANT, AS COMPARED WITH TWO TEMPERATE ZONE MIGRANTS

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By: Engels, William L

Type: Article

In: The Biological bulletin

Volume: 120

Date: 1961-04-01

Page Range: 140--147

Publication Info: Woods Hole, Mass Marine Biological Laboratory
THE EFFECT OF TEMPERATURE ON TESTICULAR RECRUDESCENCE IN JUNCOS AT DIFFERENT PHOTOPERIODS

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By: Engels, William L - Jenner, Charles E

Type: Article

In: The Biological bulletin

Volume: 110

Date: 1956-04-01

Page Range: 129--137

Publication Info: Woods Hole, Mass Marine Biological Laboratory
THE SIGNIFICANCE OF THE DARK PERIOD IN THE PHOTOPERIODIC RESPONSE OF MALE JUNCOS AND WHITETHROATED SPARROWS

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By: Jenner, Charles E - Engels, William L

Type: Article

In: The Biological bulletin

Volume: 103

Date: 1952-12-01

Page Range: 345--355

Publication Info: Woods Hole, Mass Marine Biological Laboratory