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Friday, September 23, 2016

In A Rut


Spring is when new babies appear all over the woods and fields, but the miracle of life is starting right now with the rut, also known as mating season. Now is the time of spectacular antler battles as young males challenge the older, established males.
Among the hoofed mammals like deer, elk, and bison, one or a handful of males control harems of females. While we humans concern ourselves with obtaining the next shiny piece of technology to come along, these guys are driven only by passing their genes to the next generation. Do successfully do that, they must either challenge the big guy or fend off a challenge.
All that fighting sometimes takes a toll on dominant male. Fatal injuries are not common, but exhaustion with sometimes take a life. Other times, an opportunistic male with sneak in and steal a mate while the alpha is fighting a challenger.
This is peak season for deer vs car incidents because they are only thinking of one thing, and it’d not safety. They are crepuscular- most active around sunrise and sunset so use extreme caution at those times.
Elk are known for their bugling sound during the rut. This National Park Service link will let you have a listen at this eerie phenomenon.

Why are all these critters mating now? Because the births are timed to occur in spring when food is plentiful. If there is anything nature is good at, it’s timing.

Saturday, September 3, 2016

A Day at the Beach, Nature Style

It’s Labor Day weekend and the unofficial end of summer, so let’s take a trip to the beach and check out the tide pools. Growing up in Pennsylvania, my only marine biology experience was seagulls and jelly fish at the sandy beaches of the Jersey Shore. Moving to Washington opened up a whole new dimension of ocean life for me.
Washington has rocky beaches in some areas and sandy beaches in others. The best sandy beaches have large rocky outcroppings called sea stacks. At low tide, the rocks reveal their living treasures. I also had my first seal encounter, but unfortunately this harbor seal was a carcass.
Sea Stacks

My best tide pool walk was at Olympic National Park’s Ruby Beach. I just happened to time it with the super low tide that comes with a full moon and summer solstice. Instead of just the usual starfish and anemones, we were also treated to sponges, chitons, and even a shrimp. Higher rocks had an assortment of mussels, barnacles, and snails. Snails prey on barnacles, and I managed to witness this segment of the circle of life.
Giant green anemones

Ochre Sea Stars

Chiton

Barnacle (white) and Mussels (black)

Snail eating barnacle

Dash Point State Park’s sandy beach has a nice batch of sand dollars. These are living critters, not just fancy shells in a store. Live sand dollars are fuzzy and should be left alone. Only pick up the bleached white ones.

The tide pools of a rocky beach, such as Larabee State Park, are different. There, I encountered pools of standing ocean water teeming with life, rather than exposed to the elements like at Ruby Beach. Larabee gave up crabs, limpets, sea cucumbers, starfish, and anemones. 
Crab and limpets

Sea Cucumber












There was even a pig at the beach last time I was there. Apparently Washingtonians take their livestock to the beach. I came across a chicken with its human at Shilshole Beach in Seattle.
Pig at the beach

Chicken getting ready to hit the beach