OMG, Evelyn! If you knew how many baby mockingbirds I hand fed while working at Audubon, you'd die! People would bring in baby birds all day long, and you couldn't convince them to leave them alone, so my job was to take care of them and get them prepared to be released back into the wild later on. One of the reasons we do not encourage people "rescuing" the baby birds is that there comes a time when the bird has imprinted so strongly on the parent bird, it will not take food from a person. You can cram it down their throats, but it will just sit in the crop area and not be digested. So removing them from the parent's care is often a death sentence. Now if a whole nest comes down (like during a storm) sometimes there is no recourse but to rescue them and try to feed them. And I know techniques have improved GREATLY from the days I was involved in bird rescue. So the odds might be better now. But lordy, lordy...I must have handraised at least 200 baby mockingbirds in a couple years time. Not to mention jays, grackles, thrashers, titmice, and maybe 1,000 mourning doves! (My least favorite baby birds of all time.) Anyway, your picture is a trip down memory lane for sure. Saintp, the length of time it takes an egg to hatch varies from species to species, but usually it is not very long. A week or ten days, often. I'll see if I can find out about bluejays. I don't remember. Maybe I never even knew. But the info is probably out there somewhere. Will get back to you later. Marcia

Readers Digest Book of North American Birds; ISBN 0895773511; 1990. A Fufous-sided Towhee: Pipilo erythrophthalmus: "Scratching about with one foot at a time, like barnyard poultry, rufous-sided towhees gather their food from the very bosom of the earth. It is little wonder, then, that these active birds used to be called ground robins, especially since their well-hidden nests of stems and leaves are nestled so close to the ground. Today they are named towhees because that is the sound most people hear in their song. But they were once known as chewinks, from the call they make when alarmed. In some parts of the West that call is phonetically transcribed as shrenk, while in others it sounds more like the meowing of catbirds. In sections of the Southeast they unquestionably call Louise! And although their song is translated into English in most parts of the country as "chip towhee" or "drink your tea," the birds seem to drawl it in the South, and are apt to sing chip chup chup zeeeeeee, or just a buzzy zeeeeee, in the West. Their visual field marks too are almost as varied as their vocal ones. Rusous-sided towhees in Florida have white eyes instead of red ones, and those in the West have two white wing bars plus numerous white spots on their wings and backs. But no matter where they live, all rufous-sided towhees come flying in low to the ground with the side patches in their tails looking like white chiffon streamers trailing dramatically behind them."

There are some birds that lay their eggs in another birds nest. The Cuckoo, Cowbird, Whyda, Honeyguide and Black-headed Duck come to mind. "These birds, called brood parasites, lay their eggs in another bird's nest and let the other bird parents feed and raise their chicks. The "egg abandoner" is then free to mate again and lay more eggs in another nest. The cuckoo is the best known brood parasite and an expert in the art of cruel deception. Its strategy involves stealth, surprise and speed. The mother removes one egg laid by the host mother, lays her own and flies off with the host egg in her bill. The whole process takes barely ten seconds. Cuckoos parasitize the nests of a large variety of bird species and carefully mimic the colour and pattern of their own eggs to match that of their hosts. Each female cuckoo specializes on one particular host species. How the cuckoo manages to lay eggs to imitate each host's eggs so accurately is one of nature's main mysteries."

I'm glad your bird problem turned out to be seasonal but just in case you ever face this problem again (or any bird infestation problem) I thought it might be helpful to just mention a different angle on this. The problem is not that the birds are pooping (or whatever they're doing) in your pool. That is simply a symptom of your real problem: that your environment is attractive to birds. If you really want to keep birds from being destructive to your property you have to make it so that your land is a place they don't want to hang out on in the first place. There are a lot of different approaches to this but yes, stopping the food supply is one of them. Another would be the mylar balloons someone else mentioned up above. There are also specialized bird scare balloons with 'eyes' that follow the birds wherever they fly as well as holographic tape. These incorporate movement so they are usually more affective than static decoys. There are other senses to attack as well: taste/smell, touch, and hearing. Birds hate methyl anthranilate (a chemical derived from concord grapes that has long been used for grape flavoring)--it gives them a similar sensation to what we feel when we encounter bleach. This comes in commercially available sprays. Also, there are sticky gels, netting, or spike strips that keep birds from roosting on certain surfaces. Lastly, there are sound devices that utilize recordings of predators/distress calls that scare birds away. For a partially or fully enclosed area you could use an ultrasonic device as well (one that can't be heard by humans but is annoying to birds and bats). Make sure that you switch up whatever you use from time to time. If you use balloons, move the location (but always keep it near where the birds are nesting). If you're using a sound device change the interval between effects, try to randomize the effects being used. Also, using the products together in a synergistic way will create a more effective and longer-lasting reaction. I'm glad to hear that no one has mentioned killing or injuring the birds...don't do that. As mentioned before that would be reacting to the symptoms rather than truly solving the problem. Furthermore, it would be very easy to accidentally tamper with one of the MANY birds protected by the Migratory Bird Act of 1918 (and then you'd be in big trouble). Just a side note: be careful when cleaning up the bird poop. Birds can transmit over 60 diseases to humans. Some of them are fatal. Bird dropping particles can be unknowingly inhaled and lead to serious health problems. Good luck in your future bird encounters! Here is a link that might be useful: click for examples, case studies and FAQs about bird pest control