The Buzz Dive

Today I am annotating the birds of Golden Gate Park. It is fascinating how each bird is just a little bit different from the last, even though they are all the same species, and within close proximity to each other too!

This bird has what I've dubbed the "buzz dive" on his second note. Whereas other birds just have a straight buzz he plunges in:

It's little nuances like this that make me love being able to look at the sonograms - the visual representation of the songs. This dip is very difficult to pick out in just the audio version of the recording. Here's the sonogram above at full speed:




It's only with the recording slowed down that the "buzz dive" is audible. Here's the same clip at 70% of it's original speed:




This song belongs to "G31" or "GS/GY"

He's being a little shy in this picture and turning his head away but you can see that he's a younger bird because of his brown and tan (as opposed to the adult black and white) crown.

I'm looking forward to comparing all the songs across my study sites and seeing how much variation there is between sites and between individuals. So far there's a TON of variation!