Pam Birley has taken some excellent photos using the remote cameras of a pair of ravens at Race Rocks. You can see them on her Flickr site at:
http://www.flickr.com/photos/66339356@N00/sets/72157632533500094/page2/
Tag Archives: raven
Changes in the weather
The first gentle sou’east weather pattern with clouds and rain occurred in the last few days. The rain is most welcome to wash away a summers worth of gull and pinniped excrement. This island can be smelled from a kilometer away!
About 2/3s of the sea lions have left since the weather change. We are down to around 140 animals, perhaps 75 are Stellers down from the 175 of 10 days ago. Californians make up the remainder down from 225. Quite a few juveniles have showed up in the last week.
More birds are showing up. In the last few days several Harlequin ducks and a few dozen cormorants returned to dot the shoreline with the oystercatchers. Flocks of Bonaparte gulls feed on minnows in the eddies, forced to the surface from the deeper water by murres and rhinoceros auklets. Killdeers are spending the nights here. I hear them when I shut down the generator at night. Close to 30 sparrows are flitting about, and yesterday a few eagles and ravens were hunting and scavenging. Late developing gull chicks are on the menu. The flock of turnstones forages in the sea lion haulout ignored by the sea lions.
Tour boats are becoming less frequent and sport fishermen are waning too… yesterday for example a pod of orca passed with only 2 boats watching them rather than 8-10.
Animal Census Apr 18, 2012
Stellar Sea Lion – 20
Elephant Seal – 12
Harbour Seal – 200
Glaucous-winged Gull – 200
Brandt’s Cormorant – 250
Pelagic Cormorant – 10
Black Turnstones – 30 w/ 2 juveniles
Surfbirds – 10
Raven – 4
Crow – 1
Dunlin – 2
Sparrows – 6
Pigeon Guillemots – 150
Harlequin Ducks – 100
Canada Goose – 20
Bald Eagle (adult) – 4 (juvenile) 8
Black Oyster-catcher – 40
34 people have visited in the least 2 weeks
Corvus Corvax: The Common Raven- The Race Rocks Taxonomy
We see ravens at Race Rocks especially in winter months They occupy the ecological niche of a typical scavenger. We can distinguish them from the North-western crow by their large size and their enlarged beak. Thanks to Pam Birley for capturing these images and forwarding them to us in November, 2007.
Pam took another set of images showing raven-eagle interactions at race Rocks
Also see other references to ravens in these posts
Scientific classification | |
---|---|
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Family: | Corvidae |
Genus: | Corvus |
Species: |
C. corax
|
Binomial name | |
Corvus corax |
Return to the Race Rocks Taxonomy and Image File |
The Race Rocks taxonomy is a collaborative venture originally started with the Biology and Environmental Systems students of Lester Pearson College UWC. It now also has contributions added by Faculty, Staff, Volunteers and Observers on the remote control webcams. Somealea Phoung PC year 34 |