Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 11-11-2009, 04:10   #1
Registered User

Join Date: Mar 2009
Location: Southern Chesapeake Bay
Boat: Norseman 430, Jabberwock
Posts: 691
Challenge: Preventing Loons from Roosting on Spreaders

What a mess ! I've had birds before, but this is unbelievable.

I'll stretch a line between mast and rigging above spreader, but if anyone has had success dealing with loons, perhaps they could suggest the most effective distance this line should be above the spreader, or any other idea. Now is not the time to experiment !

Thanks !
__________________

__________________
ggray is offline   Reply With Quote
Old 11-11-2009, 06:37   #2
Registered User
 
Oceansandmts's Avatar

Join Date: Feb 2007
Location: Northern Vermont
Boat: "Piscator"
Posts: 87
Loony cormorants roosting on the spreaders?

I think you have cormorants, as loons are almost totally water birds and don't roost. Cormorants can make an enormous, stinky mess so of course you want to get rid of them, and you have the right idea. A strong piece of mono fish line strung a couple inches over the spreader should do the trick, although they may move to the boom and you will need the fish line there, too. I think the 2" is about the right height for the line as it trips the birds as they try to land.

I think you can buy a commercial product that consists of vertical spikes that does the same thing, but I would wonder if it wouldn't snag lines.

Good luck, sometimes when the birds pick your boat for their roost, it is really hard to discourage them, even though there are plenty of other similar boats nearby.
__________________

__________________
John
Chuck Paine Sarah 32 under construction
Oceansandmts is offline   Reply With Quote
Old 11-11-2009, 09:29   #3
Senior Cruiser
 
Roy M's Avatar

Cruisers Forum Supporter

Join Date: Feb 2007
Location: Southwestern Yacht Club, San Diego, CA
Boat: Searunner 40 trimaran, WILDERNESS
Posts: 3,041
Images: 4
2-4 inches, horizontally above the spreader, with either monofilament line (needs occasional replacement due to UV breakdown) or UV stable small stuff (otherwise, the small birds sit on it, happily). I did this for overhanging rafters at a shopping center to counter pigeons. It works quite effectively, sending the birdies off to another, more bird-friendly, boat.

The spikes are available from Bird-B-Gone (http://birdbgone.com/), in plastic and stainless steel. Also available, in more costly options, are higher tech sound devices, electric shock strips, etc. I've installed a couple of these sonic devices. They work, but they irritate your neighbors as much as the birds. There's nothing quite so disruptive to pleasant roosting and pooping like the sound of your cousin being apparently disemboweled somewhere nearby.

At the masthead, use a Windex with bird spike (http://www.davisnet.com/MARINE/produ...sp?pnum=R3150E).
__________________
Roy M is offline   Reply With Quote
Old 11-11-2009, 10:15   #4
Senior Cruiser

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Cruising NC, FL, Bahamas, TCI & VIs
Boat: 1964 Pearson Ariel 'Faith' / Pearson 424, sv Emerald Tide
Posts: 1,531
Don't be that GOM!!!

Quote:
Originally Posted by Roy M View Post
.... I've installed a couple of these sonic devices. They work, but they irritate your neighbors as much as the birds. There's nothing quite so disruptive to pleasant roosting and pooping like the sound of your cousin being apparently disemboweled somewhere nearby....
The resident GOM (grouchy old man) installed one of these on the face dock next to his trawler. That friggin thing went off at random intervals.

I was on the other dock, nearly at the other end. I found myself tense, waiting for that hellish sound.

Never did notice a decrease in the bird population (maybe for a couple of days). He refused to remove it, and eventually covert operations were undertaken... the squaker at last had squaked it's last....
__________________
s/v 'Faith' is offline   Reply With Quote
Old 11-11-2009, 11:29   #5
Registered User
 
LakeSuperior's Avatar

Join Date: Jan 2008
Boat: Teak Yawl, 37'
Posts: 1,581
Images: 7
Cormorants, medieval death birds, will respond quickly and positively to high speed lead poisoning. Of course they are Federally protected under the Migratory Bird Treaty Act of 1918, and subsequent amendments.

Adults eat about 1 lb of fish per day and their guano is highly acidic. The North American population is estimated to be approximately 2 million birds. Thats 2 million lbs of fish consumed per day.
__________________
LakeSuperior is offline   Reply With Quote
Old 11-11-2009, 11:35   #6
CF Adviser
Moderator Emeritus
 
Hud3's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: Virginia
Boat: Island Packet 380, now sold
Posts: 8,929
Images: 49
I'm with Roy. I had bird-on-the-spreader problems. 50# test monofilament stretched from the shrouds to eyestraps installed on the mast, about 3' above the spreaders, did the trick.
__________________
Hud
Hud3 is offline   Reply With Quote
Old 11-11-2009, 11:46   #7
Registered User

Join Date: May 2008
Posts: 1,966
Consider stainless wire (attached to a small self-tapping screw in the mast) - as it won't stretch. These birds are heavy enough that they can just land on the nylon fishing line and stretch it down against the spreader. I set the wire 3" above the spreader.

Carl
__________________
CarlF is offline   Reply With Quote
Old 11-11-2009, 12:54   #8
CF Adviser
 
Bash's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: sausalito
Boat: 14 meter sloop
Posts: 7,260
how to tell a loon from a cormorant

when a cormorant swims it will tip its bill slightly upward. a loon will not.

(Double-crested cormorants are fairly common in the Chesapeake. My guess is that this is the species that is haunting your spreaders. Except for mating season, loons tend to roost in the water.)
__________________
cruising is entirely about showing up--in boat shoes.
Bash is offline   Reply With Quote
Old 11-11-2009, 14:14   #9
Registered User
 
LakeSuperior's Avatar

Join Date: Jan 2008
Boat: Teak Yawl, 37'
Posts: 1,581
Images: 7
They also will stand with their wings outspread in the sun to dry them off.
__________________
LakeSuperior is offline   Reply With Quote
Old 11-11-2009, 14:23   #10
CF Adviser
 
Bash's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: sausalito
Boat: 14 meter sloop
Posts: 7,260
yes.

Quote:
Originally Posted by LakeSuperior View Post
They also will stand with their wings outspread in the sun to dry them off.
Cormorants lack the waterproofing oil that keeps the feathers of other seabirds dry. Hence the need to dry their wings after feeding.

Of course, there's a tradeoff: most other seabirds can't "fly" five fathoms under water.
__________________
cruising is entirely about showing up--in boat shoes.
Bash is offline   Reply With Quote
Old 11-11-2009, 15:14   #11
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,150
Cormorants are also excellent fliers.
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 11-11-2009, 15:38   #12
Registered User
 
LakeSuperior's Avatar

Join Date: Jan 2008
Boat: Teak Yawl, 37'
Posts: 1,581
Images: 7
Quote:
Originally Posted by David M View Post
Cormorants are also excellent fliers.
They were almost wiped out by DDT in the 50s and 60s.
__________________
LakeSuperior is offline   Reply With Quote
Old 11-11-2009, 15:48   #13
Senior Cruiser
 
bstreep's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: San Antonio, TX/Port Aransas, TX
Boat: 1990 Macintosh 47, "Merlin"
Posts: 2,274
Quote:
Originally Posted by LakeSuperior View Post
They were almost wiped out by DDT in the 50s and 60s.
Researchers have now determined that DDT did NOT nearly wipe out Bald Eagles, Brown Pelicans, etc. The worldwide banning of DDT - for rather less-than-scientific reasons, has resulted in the deaths of millions- yes, millions - of people from malaria.

The fact that DDT continues to be blamed for this, shows how firmly folks will cling to junk science. Just today, the EPA removed the Brown Pelican from the Endangered Species list - citing the discontinued use of DDT. In spite of the numerous studies showing DDT to not cause egg shells to thin, and NONE showing that they do...

Just to admit that I was involved, I was EXTREMELY active in my high school and college days as an environmentalist - and DDT was #1 on my complaint list. I got suckered in with everyone else. I'm a molecular biologist by education.
__________________
Bill Streep
San Antonio/Port Aransas, TX
bstreep is offline   Reply With Quote
Old 11-11-2009, 15:50   #14
Senior Cruiser
 
bstreep's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: San Antonio, TX/Port Aransas, TX
Boat: 1990 Macintosh 47, "Merlin"
Posts: 2,274
We found, by accident last year, that hanging Christmas Lights from your mast works EXTREMELY well!
__________________
Bill Streep
San Antonio/Port Aransas, TX
bstreep is offline   Reply With Quote
Old 11-11-2009, 16:06   #15
Registered User
 
scook1's Avatar

Join Date: Apr 2009
Location: Bourbonnais, Illinois
Boat: McGregor venture 15 "IMP"
Posts: 506
You should consider it a compliment that the birds want to be there!
Spencer
__________________

__________________
Live in the sunshine, swim the sea, drink the wild air…
-Ralph Waldo Emerson
scook1 is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Preventing Rusty Tools! Tspringer Construction, Maintenance & Refit 37 16-11-2009 14:05
Repair to Spreaders mickmul Deck hardware: Rigging, Sails & Hoisting 11 10-03-2008 03:47
Preventing Ground Faults on Boats GordMay Electrical: Batteries, Generators & Solar 4 19-09-2007 22:30
Is preventing Blisters possible? Lynx Construction, Maintenance & Refit 21 26-11-2006 20:59
Spreaders Islandmike Construction, Maintenance & Refit 7 16-05-2006 13:14



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 14:22.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.