Posts Tagged ‘green cay’

Green Cay Predator Guards are UP!

Monday, April 13th, 2009


I wanted to tell you about my recent visit to the Purple Martin colony at Green Cay Nature Center. The facility is immaculate (as usual) and the wildlife plentiful. Birds were in abundance. From a pair of Red-Tailed hawks, mottled ducks, common moorheads and red winged black birds and others that challenged my marginal bird ID skills. I was there to install the predator guardsthat Mr.Updike (a fellow Purple Martin Conservation Association forumite) from Delaware had so graciously donated to Green Cay. Donald Campbell, the manager of Green Cay, escorted me out to the purple martin houses. The martins, for not being as close to humans as the martins at my house, were just as docile. A flurry of feathers to get airborne and then curious swoops as if we had been doing nest checks all along. The Economy 12 gourd rack was the first to come down. Though it has a capacity for 12 gourds, as its name implies, the rack currently only has 8 Troyer horizontal gourds all with round openings. Out of the 8 gourds, 6 of them were occupied with either nestlings or eggs. Those 2 that were not occupied had complete nests. None had any evidence of mites.

Not all of the nests looked the same however. As I opened the access port to the first gourd, I saw feathers had been used in its construction. I was confused. Could a Tree Swallow have nested here? No, I saw Purple Martins perched on the rack before we approached it. If it was a Tree Swallow, it would have kept the martins away from the rack. Never even mind the fact that a Tree Swallow nesting in South Florida would be for the record books. I reached in, unable to see what was laying within.European starling nestlings

The first nestling I pulled out greeted me with a big yellow beak and downy fuzz on its head and back. My heart sank. I reached in and pulled out another, then another, then another until 5 writhing bodies gaped at me. It appeared as though (unfortunately) 3 of the nests were those of European Starlings. The oldest of the nestlings was bold and unfazed by my handling. It looked at me as if to dare me.  A half smile on that wretched yellow dagger of a beak.

When I talk to people about Purple Martins and the threat of non-native nest site competitors (like starlings or sparrows) many people will deny they have a problem…until there is a problem. And when it comes to sparrows and starlings, trust me, there is a problem. But it is a delicate issue Starling Nestlingand there is always the danger of offending sensibilities and beliefs. It’s a subject I tread carefully and this situation gives me a great opportunity to show some of you that still doubt, that sometimes even if there “ain’t nothing broke”, we should still fix it. The situation at Green Cay illustrates perfectly how problems arise. The old housing was unattractive to starlings. Thus, no starling problem. Small 6×6 compartments being the main complaint. By the way, those same 6×6 compartments are unattractive to purple martins also, But necessity being the mother of invention and the Purple Martins being a lot more hard pressed for available housing, will make do with what is available to them. Why else would studies show that in larger compartments that purple martins not only lay more eggs, but successfully fledge more young. This being the case, when the new Troyer horizontal gourds were introduced this year, the Starlings took a good long look.

Being nestled in intimate proximity to an urban setting, starlings in my area have an abundant supply of adequate housing. All they have to do is fly a few hundred feet to reach any number of prime starling nest areas. South Florida architecture is famous for its use of Spanish tiles that starlings nest in quite successfully. Dead palm trees are so soft they are hollowed out by woodpeckers in record time and provide great nesting spots for starlings. So when someone puts up housing in urban areas, even if you don’t see the starlings, it is just a matter of time. And just like any of you that have ever had a picnic know, the flies don’t bother you until the food comes out. But you know the flies are around.

Interestingly enough, in retrospect I wonder if the nests that were completed but unoccupied were empty because a starling already had attacked? Could a starling have already caused damage? Regardless, the colony is thriving and at least it is an easy fix. Thankfully, with the development of SREH, the starling threat can be neutralized.

The Sunset Inn house, with its SREH is safe from the start. Every compartment was filled with 5-6 eggs or nestlings. One compartment had a 1 day old nestling that was dead, but the 4 other 1 and 2 day old nest mates seemed to be doing fine. The nest was sparse and the nestlings in this nest were on the only patch of bare floor but I rearranged the nest so that a covering of leaves provided some warmth. All the other nests were beautifully constructed with huge mud dams and perfectly crafted nests using grasses and reeds. The purple martins are lucky to have such a beautiful setting to raise their young.

In closing I hope that for those that do not believe in the benefits of SREH that you reconsider and make the conversion in your colony’s. A few moments of work will rewards you with unending peace of mind. I also urge the more passive of landlords to spend more time getting to know your birds. As it is with many active purple martin landlords, we check our birds so frequently that their world opens up to us like a crystal ball. A story unfolds slowly but clearly of the challenges they face. With active management small problems can be fixed and large problems can be unearthed quickly. And knowing our birds so intimately gives us an appreciation for these birds that is hard to describe.

But I will keep trying!

Photos and Blog Contents © S.Halpin/

Nest Check for April 7,2009

Tuesday, April 7th, 2009

Gourd #1- 3 eggs
Gourd #2- 5 eggs
Gourd #3- 5 eggs
Gourd #5- 2 eggs
Gourd #6- 6 eggs
Gourd #7- 4 eggs
Gourd #8- 3 eggs
Gourd #9 -5 eggs
Gourd #10- 6 eggs
Gourd #11- 4 eggs
Gourd #12- 4 eggs

Gourd A- 1 egg
Gourd J- 1 egg

Excluder gourd -5 eggs

Natural horizontal gourd – 5 eggs

Sunset Inn compartment A – 6 eggs

For a grand total of 62 eggs in 15 gourds and 1 nest in house.

I AGAIN tried to adjust the nestcam and can not get it aimed quite right. I will try, yet again on Saturday when I do the next nest check. I hope to go to Green Cay this Friday. I wanted to go last week but between my dental problems and our schedules; it was not possible.  I must admit that my spirits are always lifted when it comes to purple martins, but as of late any joy is somewhat muted with pain. Hopefully the worst is somewhat over and my dental issues will improve, as will my humor.


 (c) Blog contents copyright 2009 S.Halpin/

Green Cay Nature Center

Monday, February 2nd, 2009

The Purple Martin season, here in South Florida, started early but is slow to pick up. My 2 pairs are faithful companions to the gourd rack but no newcomers have arrived as yet. I suspect within the next few weeks the other ASY”S will join. Of course the Live Streaming web/bird cam is available for viewing HERE.

Green Cay Nature Center

Last week I went to see the new gourd rack and house that Green Cay Nature Center & Wetlands purchased from PurpleMartins-R-Us. I was thrilled, honored and VERY impressed with what I saw. Not only is the center sure to become a top notch birding and wildlife destination, its staff, location and facilities are all world class.

I met up with Donald Campbell, the manager of the center, who took me to see the Purple Martin housing. On one side of the boardwalk stand 2 Trio “Grandpa’s” unconverted but well used by all reports. The distance to the new housing is far enough away that the birds in the Trios will probably not switch over, even though the housing is far superior. A testament to the Purple Martins site fidelity. As the season progresses however, I believe that the new housing will surpass its older housing options in popularity.

 The new Sunset Inn house and Economy 12 Gourd Rack are on the opposite side of the boardwalk in the same location that 2 wooden houses stood. The fate of the 2 wooden houses is proof of the downside of putting up a wooden house in South Florida. Without seasonal maintenance and upkeep (repainting) the wood is quick to rot.

Green Cay is over 100 acres of constructed wetlands that filters waste water from the water treatment plant across the street. The wetlands area naturally filters this water and allows it to recycle into the environment by evaporation and percolating into the water table. For those that live in South Florida and know of our recent drought, it is obvious the great benefit that this facility provides. In addition as the site matures and as birders and naturalists come to know of this center, the park will bring a source of tourism and revenue for Boynton Beach. The 1 1/2 miles of boardwalk are a slice of heaven in an otherwise bustling area of subdivisions, cars and strip malls. Almost as if a piece of the Everglades was magically transported to this spot and forgotten about in the mad rush to develop the surrounding area.

Many thanks to Mr.Campbell. I can tell his passion for this facility is heartfelt and it reflects in the smiles I saw from both staff and visitors who obviously reveled in the beauty of the surroundings. As I talked with Mr. Campbell, several Purple Martins flew over head. I really can’t wait to go back!

Blog & Photos Copyrighted 2009: S.Halpin/