We have seen less and less Warblers in our neighborhood during bird migration seasons at least for the last 5 years.
Based on reported by Audubon Louisiana (2022) that population of Golden Swamp Warblers has been decreased since 1960.
Declining of bird population may be at the rate of 40% or even higher. It is quite great number
Golden Warblers should visit our neighborhood by about from Spring (March) to Fall (October).
Unfortunately, they are seen less and less year by year. The question then: what are causing of population declining?
Several factors are believed to contribute for declining of Golden warbler in our state, Louisiana:
- less of suitable places for living
- decreasing of forest, especially wet forest
Based on our observation at neighborhood that Golden warbler just breed once a year or once per season with 1 to 5 eggs.
After incubation period of 10 to 13 days, these eggs will hatch at rate of 60% or less. It is another reason that may contribute to declining of population.
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