Author Topic: Hornby Ground Observations That Aren't Eagle Related... 2011-2012  (Read 141094 times)

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Offline winterwren

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #555 on: October 08, 2012, 09:37:34 PM »
Beautiful little birdlet, Booni! I had only seen the females before... They don't have that striking yellow colour on the wings!

Love the perch too!  :eclol


Offline winterwren

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #556 on: October 08, 2012, 09:58:12 PM »
A few weeks ago, in this post, I wrote about a research project on the Harlequin Ducks that winter in our waters.

The project's leader, Emily Missyabit McAuley, sent me some very nice feedback about my essay! (She said she liked it!)

She also wrote:  
"It's very interesting that you point out that harlequins moult during the one time of year that eagles are absent. It's somewhat perplexing that harlequins have been seen repeatedly on the  breeding streams feeding on trout eggs, which are a much richer food source for them than invertebrates, but still tend to occur at lower densities on streams with fish. One of the alternative hypotheses that I  am trying to address is whether the negative effect of fish on harlequin breeding density is due to the fact that fish attract predators, especially eagles! Research in Labrador seems to support  this hypothesis; one study found that raptors had the largest effect on harlequin habitat selection (where raptors were present, harlequins selected habitats with "danger-reducing" features, such as vegetation overhang). I haven't formally looked into this very much, but it keeps coming up over and over again, and I'm glad that you mentioned this trend on the wintering grounds as well."

I had completely missed that key fact... That there are less harlequins on the streams that contain trout. So the indiscriminate seeding of trout all over the place does seem to affect the harlequins in some way.  

Emily explained later:
"I don't know whether the lower density occurs because adults actually behaviourally avoid streams with fish when choosing a breeding territory, or because females that breed on streams with fish leave fewer offspring year after year, which eventually results in a smaller population of adult females returning to breed on those streams (juvenile females tend to return to their natal streams to breed as adults)."

This, if I understand correctly, is what Emily's research is seeking to elucidate.

Offline jeavverhey

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #557 on: October 22, 2012, 02:39:32 AM »
Wrennie  - equals - the brain of a scientist in the body of an artist

Offline Rajame

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #558 on: October 22, 2012, 07:22:02 AM »
Well said Jeav!
Your soul lights up the room as if the sun is beaming directly.

Offline Cawatcher

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #559 on: October 22, 2012, 08:29:57 AM »
Fabulous photos and journal wrennie! I am glad that the  birds are released.. I was afraid to ask....  Booni the strength of the ant is amazing!

Offline boonibarb

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #560 on: November 22, 2012, 05:22:33 PM »

i got a chance to go out sailing one day!
It was a beautiful warm sunny day & there we were out between Hornby & Denman when we spotted these birds on the water!
 
september 4 2012 15:01 - Sea birds - Red-Necked Phalarope, immature
 







 
http://www.flickr.com/photos/43214021@N08/8210046888/#
wooohoooo!

Offline boonibarb

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #561 on: November 22, 2012, 05:28:29 PM »

Some interesting bugs i found this summer!
 
september 6 2012 10:46 - Butterfly
 



september 3 2012 16:35 - Dragonfly


 
http://www.flickr.com/photos/43214021@N08/8210045858/#
wooohoooo!

Offline boonibarb

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #562 on: November 22, 2012, 05:49:16 PM »

i love having Song Sparrows in my yard!
This one was hanging out on my wire one day.
 
september 7 2012 16:02 - Song Sparrow
 










 
http://www.flickr.com/photos/43214021@N08/8209168681/#
wooohoooo!

Offline boonibarb

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #563 on: November 22, 2012, 05:54:38 PM »

Having a good scratch, just like an Eagle!
 
september 7 2012 16:04 - Song Sparrow
 


All puffed up.



Nictitating membrane visible.


 
http://www.flickr.com/photos/43214021@N08/8209168197/#
wooohoooo!

Offline boonibarb

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #564 on: November 22, 2012, 06:02:51 PM »

i found this guy making his way across the road one day.
i photographed him next to my shoe to show how huge he was!
The colour of him was magnificent.
 
september 14 2012 16:42 - Green Crawlie
 

 
http://www.flickr.com/photos/43214021@N08/8209203025/#
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Offline Cawatcher

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #565 on: November 22, 2012, 06:10:01 PM »
 :eceek brilliant colors of water birds, sparow and catepilliar !!!!

Offline OpieK

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #566 on: November 23, 2012, 06:07:04 PM »
Booni your photographs continue to amaze!

Offline boonibarb

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #567 on: November 27, 2012, 10:12:12 AM »
 
i found this tiny feather in the woods one day.
i wonder if it is the spot from a Flicker?
 
july 19 2012 08:36 - feather
 



june 8 2012 20:30 - Red-Shafted Flicker



 
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wooohoooo!

Offline emc

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #568 on: November 27, 2012, 12:57:13 PM »
Sure could be  :ecsmile
beth
from California

Offline boonibarb

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Re: Hornby Ground Observations That Aren't Eagle Related... 2011-2012
« Reply #569 on: November 27, 2012, 04:31:27 PM »

i spotted this Robin out my window one morning, eating my flowering Currant currants!
 
july 20 2012 10:25 - Robin
 







 
http://www.flickr.com/photos/43214021@N08/8225506934/#
wooohoooo!