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Birds--General/nesting habit

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Question
Hi Roger, 6 Months ago we had a shrike nest in a 20 ft. Bamboo clump that produced two fledglings and then another two last Month; they are all out of the nest and doing fine, but are still utilizing the nest and hanging around (again which is fine), last week however, I noticed a Grackle nest being built in the same Bamboo clump,,,about 10 feet away from the Shrike nest. My question, the Shrikes were very aggressive toward any other birds that came within 50 feet of their nest when there were eggs/babies in the nest,,but became somewhat more tolerant after the babies where out and about,,,,will there be a conflict now between the two varieties?...thanks Nick

Answer
Not likely. All birds will become a bit aggressive and protective when they have eggs or young to protect. After that, they only have to fend for themselves and that's not much of a problem so their aggression dissipates quite a bit.
P.S. Grackles and Shrikes are different species, not varieties. "Varieties" refers to different versions of the same species - such as varieties of chickens - leghorn, cornish, cochin, plymouth rock, polish, etc., but they are all chickens

Birds--General

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Roger Lederer

Expertise

Any and all questions about WILD birds - not caged, domestic or poultry. Can answer questions about identification, taxonomy, behavior, courtship, plumage, flight, or anything else. Wild birds only, please.

Experience

Taught ornithology (the study of birds) at the university level for 30 years. Have written five books on birds, published 30 scientific articles, write a blog on birds, have the website www.ornithology.com, lectured to hundreds of groups on birds,and have traveled to 90 countries studying birds.

Organizations
A variety of ornithological and conservation organizations.

Publications
Real Simple Magazine, Enterprise-Record, and several ornithological and ecological journals.

Education/Credentials
PhD in Zoology with emphasis in ornithology.

Awards and Honors
Professional Achievement Award, Jack Rawlins Chair of Environmental Literach.

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