scholarly journals Costs and benefits to Red-breasted Mergansers nesting in tern and gull colonies

1986 ◽  
Vol 64 (10) ◽  
pp. 2339-2343 ◽  
Author(s):  
Andrew D. Young ◽  
Rodger D. Titman

The costs and benefits to Red-breasted Mergansers (Mergus serrator) nesting in a Common Tern (Sterna hirundo) colony and a Herring Gull (Larus argentatus) and Great Black-backed Gull (L. marinus) colony were studied from 5 June to 17 August 1984 on islands off the east coast of New Brunswick. Merganser nests outside larid colonies were preyed upon significantly more than nests in the tern colony while no difference was found with nests in the gull colony. Nests in the tern colony were more densely concentrated and more likely to be abandoned. Clumped nests in the tern colony were not initiated in greater synchrony than dispersed nests. The merganser–gull nesting association is discussed. We postulate that the protective benefit for merganser nests in tern colonies accounts for the evolution of the nesting association.

1957 ◽  
Vol 14 (5) ◽  
pp. 729-730 ◽  
Author(s):  
D. H. Mills

Herring gulls (Larus argentatus) and common terns (Sterna hirundo) were collected in the southern Gulf of St. Lawrence when lobster larvae were abundant. No lobster larvae were found in 36 herring gull stomachs and only one in 15 common tern stomachs.


1964 ◽  
Vol 42 (6) ◽  
pp. 959-973 ◽  
Author(s):  
M. Keith Pomeroy ◽  
Michael D. B. Burt

Six species of cestodes are recorded from 21 herring gulls in New Brunswick, Canada. Five of these are redescribed while the other, representing a new species, is described for the first time. Three of these species are recorded from Canada for the first time and one species represents a new host record.


2017 ◽  
Author(s):  
Ian C. T. Nisbet ◽  
D. V. Weseloh ◽  
Craig E. Hebert ◽  
Mark L. Mallory ◽  
Alan F. Poole ◽  
...  

Waterbirds ◽  
2015 ◽  
Vol 38 (1) ◽  
pp. 77-85 ◽  
Author(s):  
Shawn R. Craik ◽  
Alan R. Hanson ◽  
Rodger D. Titman ◽  
Matthew L. Mahoney ◽  
Éric Tremblay

1983 ◽  
Vol 91 (3) ◽  
pp. 437-443 ◽  
Author(s):  
J. C. Coulson ◽  
J. Butterfield ◽  
C. Thomas

SUMMARYThis paper presents evidence for the involvement of herring gulls (Larus argentatus) as vectors in the recent outbreaks of Salmonella montevideo in sheep and cattle in Scotland and suggests that the transfer can take place over considerable distances. The breeding area in Scotland of herring gulls which overwinter in N.E. England is remarkably similar to the geographical distribution of the outbreaks. This pattern, together with the feeding behaviour of herring gulls on farmland, the presence of S. montevideo in herring gulls just before their departure from the wintering area and the timing of the return just before the peak of outbreaks are all circumstantial evidence implicating this gull in the outbreaks. The rapid return of these gulls to their breeding areas means that S. montevideo can be transported long distances in one day and raises the possibility that the original source of S. montevideo could have been in N. E. England rather than in Scotland.


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