A western Kingbird found yesterday afternoon by Frank Mitchell at Black
creek marsh in voorheesville, NY (Albany’s county) on the tracks west of
Hennessy Road is continuing this morning, relocated by Jeremy Collison.
--
Zach Schwartz-Weinstein
203 500 7774
--
NYSbirds-L List Info:
https://www.pauljhurtado.com/US_Composite_Radar/2019-9-21/
There is a lot of radar activities (green color) in NYC and the Tristate area
this early morning (2 to 4 am) suggestive of a lot of birds landing.
Today looks to be a good birding day.
Good luck.
--
NYSbirds-L List Info:
A very fast survey (1 hour total) from the south end to the raunt and back
turned up:
South end:
1 Hudsonian Godwit
7 Stilt Sandpipers
6 Short-billed Dowitchers
Raunt
1 Caspian Tern
1 adult Bald Eagle
All of the common shorebirds you'd expect save:
0 White-rumped
0 Western Sandpiper
0
Hi Gus,
I really think it's just an artifact of the way the figure was made, and not
something with a complicated biological explanation. To me it looks like a
simple function that illustrates the entire estimated decline from 10 to 7, as
though the current population size was the end point.
Hi Gus and all,
The curve in the link has the shape characteristic of exponential decline at a
constant rate. It has the properties you describe, with the amount of absolute
loss diminishing in the recent years, because the population itself is getting
smaller all the time. I suspect that this
Hi Shaibal,
I took into consideration the possibility of exponential decline but it didn't
look like that.
If you calculate the decline in relation to the absolute number of birds at the
beginning of each decade, the difference is more remarkable.
Here is the percentage of decline for each
The Nighthawk Watch was productive tonight. We had 156 nighthawks, often with a
dozen birds in view at one time; another bird with no tail! The red bat
appeared again.
John Turner
--
NYSbirds-L List Info:
http://www.NortheastBirding.com/NYSbirdsWELCOME.htm
https://www.pauljhurtado.com/US_Composite_Radar/2019-9-21/
There is a lot of radar activities (green color) in NYC and the Tristate area
this early morning (2 to 4 am) suggestive of a lot of birds landing.
Today looks to be a good birding day.
Good luck.
--
NYSbirds-L List Info:
A western Kingbird found yesterday afternoon by Frank Mitchell at Black
creek marsh in voorheesville, NY (Albany’s county) on the tracks west of
Hennessy Road is continuing this morning, relocated by Jeremy Collison.
--
Zach Schwartz-Weinstein
203 500 7774
--
NYSbirds-L List Info:
Hi Gus and all,
The curve in the link has the shape characteristic of exponential decline at a
constant rate. It has the properties you describe, with the amount of absolute
loss diminishing in the recent years, because the population itself is getting
smaller all the time. I suspect that this
Hi Shaibal,
I took into consideration the possibility of exponential decline but it didn't
look like that.
If you calculate the decline in relation to the absolute number of birds at the
beginning of each decade, the difference is more remarkable.
Here is the percentage of decline for each
A very fast survey (1 hour total) from the south end to the raunt and back
turned up:
South end:
1 Hudsonian Godwit
7 Stilt Sandpipers
6 Short-billed Dowitchers
Raunt
1 Caspian Tern
1 adult Bald Eagle
All of the common shorebirds you'd expect save:
0 White-rumped
0 Western Sandpiper
0
Hi Gus,
I really think it's just an artifact of the way the figure was made, and not
something with a complicated biological explanation. To me it looks like a
simple function that illustrates the entire estimated decline from 10 to 7, as
though the current population size was the end point.
The Nighthawk Watch was productive tonight. We had 156 nighthawks, often with a
dozen birds in view at one time; another bird with no tail! The red bat
appeared again.
John Turner
--
NYSbirds-L List Info:
http://www.NortheastBirding.com/NYSbirdsWELCOME.htm
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