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Teaming research with education to promote conservation |
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Teaming research with education to promote conservation |
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 | FALL 2007 | SPRING 2008 | SUMMER 2008 | SUMMER 2008
Wednesday, 18 June
Historically the island was a practice site for aerial military strikes during WWII. However, it has since seen the lighthouse run by a keeper up until 1960’s where it then became automated. The lightkeeper raised rabbits and goats and kept the SW end of the island grazed. When the lighthouse became automated the vegetation was allowed to revert to the Hackberry and Kentucky Coffeetree stand similar to the north and east end of the island.
I have been visiting WSI for 20 years and it hasn’t been until the last 12 that the trees on the SW end began to grow too big and tall for the Black-crowned Night-Herons. From earlier habitat nesting surveys conducted by the state wildlife agency, well before my time on the island, it was recognized that the night-herons used the shorter less than 15 foot trees in which to build their nests. Almost 10 years ago the USFWS and Ohio Division of Wildlife went through the process of public review for managing part of the island for Black-crowned Night-Herons. The species is a federally designated species of concern. After the process was supported, 4 acres have been cut at waist height over the past 9 years in the historical nesting locations on the island. After 2 years there was significant use of the cut area with the birds using the base of the cut stump as a nesting platform. In 2008, I was again pleased to see a larger number of night-herons using the old cut area. The trees in the cut are getting in the 15-20 foot range. It causes the banding crew to use a ladder to reach the nests to band the young.
Kim Kaufman is preparing to band night-herons Interesting enough the night-herons as other egrets and herons are very sensitive to disturbance during the incubation period. This night-heron must have been close to hatching and she stuck tight on the nest for quite a while before quietly exiting. It is a rare occasion that you get to see a night-heron on its nest.
The banding crew handled 5 species of colonial waterbirds including Herring Gull, Cattle Egret, Snowy Egret, Black-crowned Night-Heron, and Great Egret. Sixty-eight birds total were banded. Great Blue Herons and Double-crested Cormorants nest on the Island as well but are not accessible by ladder.
This is a photo of 4 little whites (Snowy Egrets, Little Blue Herons, Cattle Egrets-are all small white birds). This picture shows 3 Snowy Egrets with a Cattle Egret chick second from the right with the mostly yellow bill and shorter neck. Little Blue Herons are known to nest on the island and all little whites usually nest colonially together making the identification not so easy. However, many years ago while at a regional bird banding meeting in southern state, I met up with a bander who bands a lot of Little Blues. He said little blues have dark gray trailing edge of the secondary feathers. For Cattle Egrets and Snowies, it is a little more difficult. Cattle Egrets have shorter necks and from what I can tell have shorter and stouter legs (fatter legs). At first I thought all of these were Snowies, but in my head when banding something wasn’t quite equal with all of them and I remembered the band number on the one that wasn’t like the others (that is hard to believe I am sure but it is the way it happened). So after looking at the picture and getting a second opinion, the Cattle Egret was weeded out of the mix. For the past two years the weather and bugs on the island have been tolerable. It has been very hot, humid, with a host of mosquitoes and stable flies to escort you around the island. I probably just jinxed myself. There is always something to be amazed out in nature. This is the only place I have seen Poison Ivy Trees with trunks 3-4 inches in diameter and free standing. A sight no one believes until they see it. Some think by looking at the plant whey will contract the itch.
Enjoy Summer! _________
Today forces were split up between two Monitoring Avian Productivity and Survivorship (M.A.P.S.) breeding bird sites (Oak Openings-Ostrich Lane and the Navarre site). The Navarre MAPS site includes 10 nets in similar habitat as the migration site but located 100 yards north. The Ostrich Lane site is located on Metroparks of the Toledo Area. The Observatory has a great relationship with those fine people. We have 16 nets where 4 nets are stationed in four different managed habitats which are Oak Savanna- understory with sparse trees, Forest with understory-control area, grassland dune area, and early successional area. Nets were run for 6 hours and numbers of birds were very similar with Navarre capturing 23 new and 7 recaptures and Ostrich Lane capturing 19 new birds and 7 recaptures. Highlights of the Navarre MAPS station was an Acadian Flycatcher and a molting Northern Waterthrush. The waterthrush is inevitably not going to breed this year. It had already begun its symmetrical wing molt which is done in adults after the breeding season is over. For some reason it will not breed this year.
Highlights of the Ostrich Lane site were a female Scarlet Tanager, male Blue-winged Warbler, and a female Blue Grosbeak! She was beautiful! For a female with her chestnut head and blue rump and wings, she outshined the male because he did not show his face. She was nice-looking regardless of that fact. The male sang in the savanna habitat which was where the female was captured. Hmmm… not typical habitat to find a Blue Grosbeak. There was another pair at the south end of the banding site too. Their populations must be increasing or at least at this site. The female was a second-year bird and may possibly been an offspring of the birds seen in the area last year. We did capture a female in the early successional area last year.
The weather is great to get out and learn some bird songs so take the opportunity to expand your song repertoire! Julie Shieldcastle
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