Describe a sound

  Yesterday I was in the yard and I heard a bird I've never heard before. It's so frustrating, no one else was around. I can't begin to describe the sound of the bird, so it will remain forever a mystery.  It was lovely sound though. It flew in a circle twice over the house, and I couldn't even see it well because the sun was out. I'm just not a huge fan of staring into the sun.
  Today I hear the monkeys. When I stand at the sink and do the dishes I can see one, in the tree across the street. There are about a dozen out there. I see 2 little ones jumping on the branches above their Mommas. We went out for a closer look and I kid you not, there was one on it's side laid out across a branch looking at us as we looked at her. For once  I could see perfectly well. A lot of the time it's hard to see them because they are in the shade, or after being in the sun my eyes don't adjust to the shade within the tree, and the howler monkeys have dark fur. Wait, do monkeys have fur, or is it hair? Reference.com says they have hair. That makes sense. They are primates like us. So what is the difference between fur and hair? Shouldn't I know the answer to this? I went to the Scientific American for this one.
  I didn't know there was such a thing as a mammalogist. There is no difference between hair and fur. I have more reading to do. How come my hair grows longer, but my dog's fur doesn't keep growing? Well, it can grow in thicker and longer in the winter, right? But Yorkshire Terriers are referred to as having hair. Never mind, I'm sorry I asked. There is no straight cut answer. Don't get me started on how the whales are mammals. The description says they are "nearly hairless". How much hair does a whale need? Where is it, and what purpose does it serve? Could you imagine whales at a beauty salon. No, of course not, that's just ridiculous.
  Where was I? Yes, the monkeys sounded very loud today and it's because they are 50 feet from the house lounging in the super tall trees there. They have a big booming voice. I just love it. It's such a unique experience.
  Yesterday was another glorious day in Samara. We went for a 3 mile walk on the beach, and might have escaped a sunburn except it was high tide. The waves were big and came crashing in and so we had to go play in them for a bit. When it's low tide the waves are small and infrequent and you can stare at the beach while having a conversation about how awesome it is to be in the ocean. When it's high tide the waves are so loud and so constant that you have to constantly watch for them.
  I respect surfers much more now. It's all about the timing, and we weren't even surfing. There was this one wave where we were waist deep in the water and it came at just the right phase of the wave breaking that it slapped us hard. Ron got it worse than me, I could see his back was all red. The ocean can be so rude sometimes. It was actually kind of funny.
  You have to respect the tides though! It was at the peak of high tide and we were only 20 feet from the shore and we were getting beat up by big long waves. It's a lot more technical than I thought. There is a whole education here. I looked it up. After I started with the vocabulary I was very surprised. It started with A for Amplitude: the vertical distance from still water level to wave peak. Now I'm gong to figure out all these words like barrel and bathymetry (that's how they spelled it at surfing-waves.com), and capillary waves, chop, closeout, diffraction, fetch, and ground swell, neap tide, refraction, shoaling and a trough. Just as an example. I guess it's kind of a big deal.

  Cool, I found something new to learn about. The way my brain works when I write - I love it. The waves we were in were really rough. It was a fantastic workout. There was a serious undertow, and the waves were coming in fast. We were at a part of the beach where the ground dips down 1-2 feet in different places. So there I was in waist deep water, and a wave would come, taller than my head. I make a choice, one of 3 things. Dive under it, jump up and hope my head gets above it and it carries me a little, or let it smash into me (always the last choice). The force of these waves was pretty impressive. I think it will be my new workout of the month. The thing is, it gets pretty tricky when the ground level changes, and the height of the water changes, and when you put your foot down and the tide going back up is so strong you are running in place. When I was caught off guard it was crazy, because there would be the bottom half trying to drag my legs towards the ocean and the top half crashing into me trying to drag me to the beach.
  For all you folks who keep telling me to be safe, I want you to know that I'm aware of all the signs around that say beware of rip currents, or rip tides. We don't actually swim, we go maybe chest deep, and there are people on the beach to yell to if needed. And usually surfers around.
                                                   Pura Vida !

The waves here aren't even big enough to surf inside of, not on our beach. It's a beginner's beach. This is just a picture I found online. There used to be bigger waves, but there was a big 7.6 earthquake in... 2012 that raised the reef enough to kill the wave abilities. The locals say it rose 3 feet.