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Post by SpringRain🕊️ on Oct 8, 2019 11:15:43 GMT -5
I can't take credit for finding this article; it was posted by a regular poster on the BP Forum. But its information was too relevant not to share. nationalzoo.si.edu/news/new-smithsonian-study-links-declines-suburban-backyard-birds-presence-nonnative-plantsNonnative plants, and not just invasive ones but decorative ones, are contributing to the decline in bird population. It isn't the plants themselves, it's the fact that they don't attract insects on which birds feed. Birds that eat insects depend on caterpillars and spiders, which are attracted to native, not nonnative plants. So while we might find ways to remove caterpillars chewing up our plants, apparently we're also removing a major food supply for the birds. What's the solution? Plant extra crops for the caterpillars and spiders? I think we could all probably manage that, protecting some plants from predators but allowing others to host caterpillars and spiders for our birds. Would nets be the most appropriate to protect plants? The article addresses the appeal of the nonnatives, specifically, less of a lure to insects. But therein lies the negative aspect and irony as well. This has made me wonder about the effect of hybridization, and whether or not these plants also fail to encourage insects. This is a well written, scientific article which addresses a major issue, not only for birds, but for plant management as it affects nonnative crops. Since we're planning for next year's gardens, this is a good time to identify which native and nonnative plants we have. I'm partial to David Austin roses, but they are hybridized, and it's not clear whether or not they would still attract insects. And what about all the hybridized seeds? Perhaps I'll need to create a special bed for insects on which birds can feed.
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Post by gb98 on Oct 31, 2021 8:38:37 GMT -5
I'm two years late here, but this thread is worth dredging. What you say here is 100% true and is explained in Doug Tallamy's "Bring Nature Home" which is an excellent read about the importance of planting more native plants rather than introduced ones.
Did you know that a mother chicadee needs to find 300-500 caterpillars a day to feed a nest of young? Seeds can sustain birds over the winter, but they need insects during the breeding season to feed young.
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Post by Latitude33 on Dec 30, 2021 18:33:51 GMT -5
I have never understood why public agencies and others in California do not landscape more with natives. There is the occasional display of drought tolerant native plantings, but not on larger scale projects such as highways. For some unknown reason there seems to be a dependence on oleander and eucalyptus.
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