Here it is so you can ignore it once again. By the 1991 ban on lead shot the eagle population was well on it's way to recovery. There was no statistical change in recovery after the ban. In fact, the rate of increase actually went down.
Can we see "your" data again?
Re Eagles, DDT, and lead shot: Data on the number of breeding pairs of bald eagles doesn't show that the rate of increase was steady after the lead shot ban. For example, per FWS data there was almost no increase from 1999-2000 (from 6404 to 6471), and then only about a 10% increase from 2000 to 2005 (6471 to 7066). And 10% was about the annual rate of increase from 1987 (after the DDT ban but before the lead shot ban) to 1991, when lead shot was banned. With only one significant exception, that rate of increase remained relatively steady until 1999, at which point numbers flattened out a lot (only about a 10% increase in the 6 year period from 99-05.) Then, however, numbers took a HUGE jump: from 7066 in 05 to 9789 in 06. Makes me wonder whether there was a change in how the numbers were arrived at. That's a far larger jump than any other single year increase.
Last edited by L. Brown; 05/31/18 10:54 PM.
