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    Browsing by Subject "Ring-billed gull"

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        Behaviour and reproductive success of female-female pairs of Ring-billed gulls (Larus delawarenis), Granite Island 

        Nunan, Kathleen M. (1982)
        Female-female pairs of Ring-billed Gulls were studied on Granite Island, northern Lake Superior, during the breeding seasons of 1979 and 1980. In 1979 the colony consisted of approximately 2400 pairs with 99 nests (4.1%) ...
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        Biology of "peak" and "late" nesting Ring-billed gulls, Granite Island, Lake Superior 

        Boersma, Dora Catherine (1982)
        Late-nesting Ring-billed Gulls in this study laid fewer and smaller eggs and hatched fewer young than earlier nesting pairs. Birds nesting late in the season appeared to lack sufficient stimuli for incubation, as indicated ...
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        Relationship of body size to time of nesting and mate preference in the Ring-billed Gull (Larus delawarensis) 

        Johnston, Victoria Helen (1988)
        The first part of this thesis investigated the relationship between time of nesting and body size in Ring-billed Gulls (Larus delawarensis). There were no significant differences in skeletal measurements among birds ...
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        Reproductive performance of Ring-billed gulls in relation to nest location 

        Somppi, Patricia Lynn (1978)
        Reproductive performance of Ring-billed Gulls (Larus delawarensis) in relation to nest location was investigated on Granite Island, northern Lake Superior, in 1976 and 1977. To determine whether any differences existed in ...

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