This photo taken an hour earlier than yesterday’s post shows a humpback whale fluking or lobtailing. Lobtailing is the act of a whale lifting its fluke out of the water and then bringing it down onto the surface of the water hard and fast in order to make a loud slap. Large whales tend to lobtail by positioning themselves vertically downwards into the water and then slapping the surface by bending the tail stock. They are likely to slap several times in a single session. The sound of a lobtail can be heard underwater several hundred metres from the site of a slap. This has led to speculation amongst scientists that lobtailing is, like breaching, a form of non-vocal communication. Also some suggest that lobtailing in humpback whales is a means of foraging. The hypothesis is that the loud noise causes herring to become frightened, thus tightening their school together, making it easier for the humpback to feed on them.
Bald Eagles
Bald Eagles are frequently sighted in our area. At times they can be seen in large numbers. This is usually where food supplies are high. For example this could be in areas with high concentrations of baitfish or along the rivers in the fall when the salmon are spawning. They are not migratory, but do move around with the food supply. As mentioned earlier when the salmon are spawning we often see many along the rivers, while there will be fewer along the coastline. With little need for camouflage their white head and tail feathers can be spotted easily. The female is slightly larger and her white head extends down a bit farther onto the body, but it is subtle. It takes these birds 4.5 – 5 years to acquire this unique plumage. As juveniles they are a brown colour. With exceptional eyesight and the ability to view 270 degrees they are understandably often seen in high perches and in trees near points and passageways.
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