01 September 2017

eBird Month List Tip

All-time Month lists can be accessed via Targets.


For example, 



This will show what you have NOT seen: I have seen 148 species in September but, of ALL the species seen in September by everyone, I am missing 70 species.

To see what you HAVE seen, click the blue hyperlink next to the species total (i.e., the 148 in below example).  This will take you to a page that shows ALL the species you have ever seen in September. (photo not included in this blog).

(Thank you, Marshal Iliff!)

21 July 2017

What's in a Cheeseburger?: Alphabetical Consonants to Describe Bird Song

Premise

What if we arbitrarily assigned consonants to tell us about the relative pitches in a bird's song?
 I am going to try this.

Cheeseburger

So, for example, take the chickadee song often described as "cheese bur ger". This word doesn't automatically tell me which syllables are of higher or lower pitch than the others. But what about the last two sylables - "bur" and "ger"? Are they both on the same pitch? Not always. Sometimes the "ger" is the same pitch as the "bur", and sometimes it is slightly 'flat' - as in 'lower'.


Human Nature

Often-times, people just clue in to one song/sound they recognize, a 'key song' if you will, and ignore the rest. But, if one pays more attention to all one hears, one quickly realizes there is a lot of variation even in the cheeseburger call. Yes, it is overwhelming. Auditory memory and organization is generally not as well-developed as visual.

It is human nature that the vowel sound "ee" is going to be higher pitched than other vowel sounds. Indeed, in this case the "cheese" syllable is higher pitched than the other two. And it is human nature to focus more on the vowel sounds - I think it is hard-wired into our brains.


Assigning Consonants
If we arbitrarily assigned consonants based on pitch: higher-pitched syllables would start with a consonant occuring further along in the alphabet -- just like the letter-notation of music where pitch "G" is higher than pitch "D".

- Tee is higher than fee
- Yer is higher than bur
- hoo is higher than boo

The two-toned chickadee song - where the first syllable is the highest pitch and second and third syllables are on the same pitch, could be described as:

Yer-tu-tu
Fee-bee-bee
See-fur-fur
Gee-dee-dee


The three-toned chickadee song where each pitch is lower than the previous, could be described as:

Yer-too-blue
Fee-dee-bee (feed debbie), or Fee-de-bur (Feed de bird)
See-fur-bie
Gee-de-bur

This convention doesn't give any indication of duration of the syllables / notes in the song, but only of relative pitch. But the two main purposes of using human words to describe bird songs are to help one remember them and to communicate what one heard to another human.

"Cheeseburger" just confuses me because it doesn't tell me whether it is the two-pitched, or the three-pitched song. "Yer-tu-tu" and "feed-de-bird" make way more sense to me.

(Someone else has probably already thought of this, hehe. No matter. I'll keep trying it out for myself. )





04 July 2017

Curlew Update 4 July 2017

Mojo the Long-billed Curlew 


set out from Skookumchuck Prairie IBA at 9:30 pm on the first of July, 2017 following two females, Mildred and Pine, who left the area on the 21st of June.  All three birds flew straight toward Enterprise in northeast Oregon.  Mildred and Pine stopped at Enterprise for a bit before continuing on to California, but Mojo went past, turned southwest along the Malheur River, a tributary of the Snake River, and managed to find some agricultural fields out in the middle of nowhere, for goodness sake.  His last co-ordinates placed him south of Juntara, Oregon.


Mojo flew past the fields where Mildred and Pine took a breather


Mojo found some fields, Granite Creek Road, Juntara, Oregon




















Equina

What fate has befallen Equina?  Her transmitter has not been transmitting since 29 June and today I found a very small pile of curlew feathers beside the highway near her last known co-ordinates between Moan and Ford Roads.