(24 PICTS: 01-2------------------------------------------------------------------------------------------------------------------------------------------4)
2 
Bonaparte's Gull
Larus philadelphia
On 6th May 2007 I found a 2nd calendar year Bonaparte's Gull in the western part
of the Port of Rotterdam. It was the third time I found this species in late spring in
the SW part of The Netherlands. Increasingly species of New World origin are seen
during spring at this latitude. I speculate that these birds strayed to North Africa and
southern Europe in autumn and migrate northward in spring and eventually returning
to Canada via the shortest route crossing the North Atlantic. A summer plumaged adult
similar to the one I found on 6th May 2004 (sorry for the very vague pictures!) was seen
a week later in NW England fitting the speculation.
1-blackheadedgulls-
2-bonapartegulls-
3-mediterraneangulls-
4-littlegulls
5-franklin'sgulls
01 Bonaparte's Gull Larus philadelphia 2CY 03052007 1 Rotterdam, The Netherlands, c Norman Deans van Swelm
02 Bonaparte's Gull Larus philadelphia 2CY 03052007 Rotterdam, The Netherlands, c Norman Deans van Swelm
03 Bonaparte's Gull Larus philadelphia 2CY 03052007 3 Rotterdam, The Netherlands, c Norman Deans van Swelm
04 Bonaparte's Gull Larus philadelphia 2CY 03052007 2 Rotterdam, The Netherlands, c Norman Deans van Swelm
05 Bonaparte's Gull Larus philadelphia 2CY in flight 03052007 1 Rotterdam, The Netherlands, c Norman Deans van Swelm
06 Bonaparte's Gull Larus philadelphia 2CY in flight 03052007 4 Rotterdam, The Netherlands, c Norman Deans van Swelm
07 Bonaparte's Gull Larus philadelphia 2CY in flight 03052007 3 Rotterdam, The Netherlands, c Norman Deans van Swelm
08 Bonaparte's Gull Larus philadelphia 2CY in flight 03052007 2 Rotterdam, The Netherlands, c Norman Deans van Swelm
09 Bonaparte's Gull Larus philadelphia 2CY in flight 03052007 5 Rotterdam, The Netherlands, c Norman Deans van Swelm
10 Bonaparte's Gull Larus philadelphia 2CY in flight 03052007 6 Rotterdam, The Netherlands, c Norman Deans van Swelm
11 Bonaparte's Gull Larus philadelphia 2CY in flight 03052007 Rotterdam, The Netherlands, c Norman Deans van Swelm
12 Bonaparte's Gull Larus philadelphia 06052004 Maasvlakte, Rotterdam, The Netherlands, c Norman Deans van Swelm
<13 Bonaparte's Gull Larus philadelphia 06052004 Maasvlakte,
Rotterdam, The Netherlands, c Norman Deans van Swelm
14 Bonaparte's Gull Larus philadelphia 1993 Churchill, Canada - c A.& P.de Knijff
15 Bonaparte's Gull Larus philadelphia 2CY 1993 Churchill, Canada - c A.&. P.de Knijff
16 Bonaparte's Gull Larus philadelphia adult 1993 Churchill, Canada - c A.&.P.de Knijff
17a Bonaparte's Gull Larus philadelphia 2CY 03052007 Rotterdam bill details-
17b Bonaparte's Gull June 1993 Churchill,Canada 2CY bill details - c A. & P.de Knijff
18a Bonaparte's Gull Larus philadelphia 2CY 03052007 Rotterdam leg details
18b-18c Bonaparte's Gull June 1993 Churchill,Canada 2CY leg details c A. & P.de Knijff
compair:
19a-19b
19a Bonaparte's Gull Larus philadelphia 2CY in flight 03052007 Rotterdam, The Netherlands, c Norman Deans van Swelm
19b Black-headed Gull Larus ridibundus 2CY 10052007 Stellendam, The Netherlands, c Norman Deans van Swelm
20 Bonaparte's Gull Larus philadelphia 1CY 23082007 Strypse Wetering,Rockanje, The Netherlands, c Norman Deans van Swelm
21 Bonaparte's Gull Larus philadelphia 23082007 Rockanje, The Netherlands, c Norman Deans van Swelm
22 Bonaparte's Gull Larus philadelphia ad 03112011 4018 Haringvlietsluizen, The Netherlands, c Norman Deans van Swelm
23 Bonaparte's Gull Larus philadelphia 1W 03112000 Stellendam, The Netherlands, c Norman Deans van Swelm
24 Bonaparte's Gull Larus philadelphia ad 03112000 Stellendam, The Netherlands, c Norman Deans van Swelm
| blackheaded gulls | |||||
| 1A | 1B | 1C | 1D | 1E | 1F |
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| 12 | 24 | 36 | 48 | 61 | 67 |
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mediterranean gulls
18 Nov 2021