![]() The reservoir originally provided the ever-expanding water needs of Akron's industrial complex. Nimisila Reservoir was the last of the Portage Lakes to be created. At 825 acres, it's the largest body of water in the park district. Nimisila Reservoir is one of the 13 bodies of water that make up the Portage Lakes. With only electric boat motors permitted, the pace is slower and quieter, making for a good fishing experience even when the stringer remains empty. Other fish in the lake include northern pike, walleye, bluegill, black and white crappie, yellow perch, brown bullhead and redear sunfish. It's known for its channel catfish and largemouth bass. If you're a serious angler, Nimisila Reservoir is for you. Amphibians & Reptiles in the Metro Parks.By early October, many of the Purple Martins have left Arizona but some are frequently seen in smaller numbers into late October. Large groups have been documented gathering together in the evenings to communally roost in the Tucson area and Tucson Audubon will be soliciting observations of this behavior in late summer into autumn. ![]() Late August into September, Desert Purple Martins begin to gather into larger groups and prepare for their fall migration. than other subspecies and seem to be timing their arrival to take advantage of our monsoon abundance for their nesting. There are still scientific knowledge gaps about the migration routes and wintering areas for Desert Purple Martins, but they arrive much later in the U.S. The Desert Purple Martins have a very different migration pattern than other subspecies. Young have been detected in nests from July 30 to August 21. They don’t lay eggs until early or mid July based on observations in the Tucson area. Observations of birds carrying nesting material in June seem to be linked to nest site investigation and guarding behavior of preferred saguaros instead of actual nesting. According to the Arizona Breeding Bird Atlas, Desert Purple Martins have the following breeding time frames: They become common in breeding areas around mid-May and are often observed defending nesting saguaros throughout June. They have never been documented using human made nesting structures and nest almost exclusively in cavities in saguaros in Arizona or in cardon cactus in Mexico. You could be a part of an important scientific discovery! Let Jennie know if you have a feather by emailing her.ĭesert Purple Martins have a very different strategy for nesting than the rest of the species. We have partners that can perform lab analysis on these feathers and learn about the genetics of this distinct subspecies and possibly determine where the bird wintered or its migration path using stable isotope analysis. If you find what you believe to be Desert Purple Martin feathers near a known nesting location or a dead Purple Martin please let us know immediately. We do have several endoscopes and long poles we can use to peek into nests and gather data! If you know of a nesting colony on your own property or in an area that is accessible to the public please let us know here. Desert Purple Martins are loosely colonial with multiple pairs forming a nesting community in a stand of saguaros, often in excellent Sonoran Desert habitat. Report a nesting colony of Purple Martins.If you see or hear Purple Martins anywhere in Southeast Arizona please report them here or enter your sightings into.We may also have group excursions into larger areas to look for colonies. Participants will have the opportunity to survey nesting colonies of Desert Purple Martins in publicly accessible areas or on their own properties if applicable. ![]() Join Tucson Audubon’s Community Science Purple Martin Project Survey Crew.Tucson Audubon could not have launched this project without the amazing help of birders and volunteers who have reported sightings. ![]() Documenting breeding behavior is another goal of the study this year and into the future. The goal of Tucson Audubon’s Desert Purple Martin Project is to document saguaros and specific nesting holes and note their height and orientation.
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