American Dippers will capture and eat young fish in streams. This dipper has captured a chum salmon fry. When dippers feed their chicks salmon fry the chicks have a better survival rate than when they are fed aquatic insects. Why do dipper chicks have a better survival rate when fed salmon young? (Answer: Because salmon fry have a higher amount of protein, calcium and phosphorous than aquatic insects their normal prey.) American Dipper bringing fish to GoPro from Bob Armstrong on Vimeo.
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- When bears drag salmon out of the stream blow flies usually lay their eggs on them.
- In a few days the eggs hatch and huge numbers of the larvae, called maggots, feed on the salmon carcass.
- These ravens are taking advantage of this and eating the very nutritious maggots.
- To learn more about this process go to the videos titled Salmon and Blow Flies or Salmon and Blow Flies in Alaska.
- This video is a good example of the relationship between Red-breasted Sapsuckers and Rufous Hummingbirds.
- Sapsuckers typically drill holes in trees which causes the tree to release some of its sap.
- These woodpeckers have a brush-like tongue to lap up the sap. Other woodpeckers have a tongue with a sharp, horny tip for spearing insects.
- To learn more about woodpeckers go to Drummers in the Woods (Woodpeckers) by Bob Armstrong and Marge Hermans
- To learn more about Rufous Hummingbirds go to To Mexico and Back Again (Rufous Hummingbirds) by Bob Armstrong and Marge Hermans
- This sapsucker has gathered insects and sap to feed its youngsters.
- In Alaska Rufous Hummingbirds are known to nest near sapsucker trees and feed heavily on the sap -- which may be more nutritious than flower nectar.
- The hummingbirds will feed their youngsters the sap and the insects that might be attracted to the sap.
- The distribution of Red-breasted Sapsuckers and Rufous Hummingbirds in Alaska is nearly identical.
- These Pacific herring females were laying their eggs on mussels in Auke Bay, Juneau Alaska.
- Of interest is there did not seem to be any males taking part.
- This Great Blue Heron spotted the activity from about 200 feet away and flew nearby.
- It started eating the herring which appeared to be fairly easy to catch.
- Great Blue Herons are fascinating birds. To learn more about them look at Things that go Squawk in the Night (Great Blue Herons) by Bob Armstrong and Marge Hermans